caltech college essay example

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College Essays

The California Institute of Technology—or Caltech, as it's more commonly known—is a highly exclusive college. If you want to join the Beavers, you'll need not just top grades and standardized test scores, but strong writing supplements to support them as well.

Caltech accepts around 6% of students who apply, making it an extremely competitive school . The more you know about the Caltech essay prompts before you start, the better prepared you are to answer them.

Read on to learn about 2021's essay prompts, as well as some tips and tricks for maximizing their potential to impress!

Feature Image: Canon.vs.nikon /Wikimedia Commons

BREAKING: Caltech Application Changes Due to COVID-19

As a result of the novel coronavirus pandemic, many colleges have made the decision to at least temporarily stop requiring SAT and ACT scores. In June 2020, California Institute of Technology announced that they will stop considering SAT and ACT scores of applicants for the next two admission cycles (those applying in fall 2020, 2021, and 2022). This means that, not only are SAT and ACT scores not required, but, even if you submit them, they won't be reviewed and they won't be considered as part of your application. (This is what we refer to as a "test blind" policy.) Additionally, international students can now meet Caltech's English proficiency requirement by submitting either TOEFL or Duolingo scores.

Because of SAT and ACT cancellations , as well as the difficulty some students are having preparing or paying for the tests, Caltech made the decision to temporarily stop requiring standardized test scores to make admissions as fair and equitable as possible. Because test scores aren't being considered, there will be an increased emphasis on classes students took and the grades they received in them.

What Do I Need to Know About the Caltech Essays?

Caltech accepts four different applications: Coalition, Common App, Powered by Scoir, and Questbridge. In addition to the required Coalition,  Common Application, and powered by Scoir essays, Caltech also requires three short essays. ( Questbridge applicants only need to write these if they become Match Finalists and have ranked Caltech.)

You’ll write one required academic question and three required short answer questions, but you’ll also have the option to answer three supplemental short answer questions and one supplemental academic question, if you want.

Altogether, you'll be writing up to 1100 words for the required essays, and 300 words for the optional short answer questions. These essays are fairly short, so you'll want to spend a good amount of time honing your argument to its most efficient. Start early so you have plenty of time to plan, refine, revise, and proof before you submit!

Do a little preparation and you can look this happy when writing your Caltech essays, too!

What Are the Caltech Essay Prompts?

The Caltech essay prompts are fairly standard, though each one is tailored to the college's specifications. You'll see the usual "Overcoming Obstacles” and “Defining Your Fit” essay questions, but always keep in mind that you're applying to Caltech specifically, and your essays should reflect that.

Required Academic Question

Because of the rigorous core course curriculum, Caltech students don't declare a major until the end of their first year. However, some students arrive knowing which academic fields and areas already most excite them, or which novel fields and areas they most want to explore. If you had to choose an area of interest or two today, what would you choose? Why did you choose that area of interest? (Max: 200 words)

The first essay asks you share your academic passion (or passions), and how you discovered them. Many colleges understand that students change their majors throughout the course of their careers, and Caltech doesn’t want you to have to choose a major until you’re a sophomore. But they still want you to have a good idea of what you want to focus on and why it matters to you.

The key here is to be specific about your area of interest. Note that they don’t mention a major, but instead an overall field. In other words, now isn’t the time to say that you want to major in biology because you’ve always done well in school. Instead, focus on something more specific, like a problem you want to solve or an experience that changed the way you see your career. Maybe your physical science egg-drop challenge inspired a desire to create safer structures, or maybe a field trip to a NASA location made you realize you had to be in that control room one day.

Whatever the case, be as specific as you can with what you want to study, and remember that multiple majors could get you there. For example, visiting NASA could have inspired you to study mathematics, physics, or engineering. There are multiple paths to reach the same goal; do your homework, look at the different programs Caltech offers, and choose one or two that align with your dream.

Caltech is, in their own words, “an unapologetic STEM institution.” Whatever you do, make sure that your chosen area fits within these parameters.

Required Short Answer Question #1

At Caltech, we investigate some of the most challenging, fundamental problems in science, technology, engineering, and mathematics. Identify and describe two STEM-related experiences from your high school years, either in or out of the classroom, and tell us how and why they activated your curiosity. What about them made you want to learn more and explore further? (Min: 100/Max: 200 words for each experience)

This prompt is asking you to discuss something you're passionate about. Your interests and activities outside of school and work can reveal a lot about the kind of person you are. As such, this prompt is a great opportunity to show how you exhibit the characteristics of the perfect Caltech candidate in your life experiences that don’t show up in your test scores and GPA.

Hopefully, thinking of a topic for this essay will be easy for you. You should write about a situation, story, or topic that gets you so engrossed and excited that it’s tough to tear yourself away from learning about it! Whether that’s reading up on the psychology of conspiracy theories or bird watching with your little brother, the most important thing is that you choose something that you’re deeply interested in. When you do that, admissions counselors will be able to feel your passion too!

Even though you probably could write pages and pages about the topic you choose, it’s important to keep things clear and concise here. Remember: you only have 200 words per topic to work with! To keep your essay focused, tell the story of how these experiences piqued your curiosity into the subject (or subjects) you’ve chosen to write about. You can describe your learning process, even if it’s quirky or unconventional. This is your chance to show Caltech how you choose to expand your mind when left to your own devices.

And that’s the most important thing to emphasize in your essay. Caltech is looking for students who don’t stop learning when the semester ends. The people who make a difference in the world are passionate, lifelong learners. This essay is your chance to show off your niche interests and prove to Caltech that you’re a lifelong learner too.

This guy would fit right in at Caltech.

Required Short Answer Question #2

The creativity, inventiveness, and innovation of Caltech's students, faculty, and researchers have won Nobel Prizes and put rovers on Mars , but Techers also imagine smaller scale innovations every day, from new ways to design solar cells to 3D printing dorm decor. How have you been an innovator in your own life? (Min: 200 / Max: 250)

This question is a great way for you to show off your skills! Maybe your insight helped your school’s robotics team take home first place, or maybe you found a way to streamline some part of your family’s day-to-day routine. You have a lot of options here, but make sure to keep your topic focused on STEM-related subjects. This is an excellent topic for a problem-and-solution essay: after all, your innovation will have improved a situation, right? You only have 250 words, so you’ll need to make them count! Caltech wants to see how your mind works : why were you driven to your chosen innovation? Were there any obstacles? What was the end result, and how was it received?

Remember:  you'll need to give the admissions counselors enough information that they can understand your innovation and  its impact. Be sure to answer both parts of this question so that you're fully addressing the prompt. 

It probably wasn't one of these kids who wrote these successful Caltech essays.

Required Short Answer Question #3

The process of discovery is best advanced when people from diverse backgrounds come together to solve the greatest challenges in their fields. How do your past experiences and present-day perspectives inform who you have become and how you navigate the world? (Min: 200 / Max: 250)

This is your chance to show Caltech what makes you tick, and how you’ve become who you are. Think back on the formative experiences in your life: your home, your family, your cultural background. How have they shaped you into who you are now and what you want? Show Caltech how you see the world, and why.

As always, you should remember to gear this toward STEM as much as you can: Caltech isn’t kidding when they tell you to “lean all the way in on the STEMiest of STEMmy topics.” The trick here is to show how your own lived experiences have informed your interest and perspective on the STEM subject that you’re most drawn to. Maybe you come from a family of artists, and their sense of aesthetics informs the way you design and present your projects. Maybe you have a different cultural background than most of your peers, which influences your thought processes.

Be sure to tell a story here so that you can connect with admissions counselors. For example, was there a formative experience in your childhood or youth that made you realize you stand out from your peers in some way? Was a family member or cultural tradition particularly influential?

CalTech Short Answer Questions

Along with longer essays, you'll also have to tackle a few short answer responses, too. We'll break them down below! 

Supplemental Short Answer Question #1

If there are aspects of your identity that you feel are not captured elsewhere in this application, please provide that information below. (Max: 150 words)

This is a pretty broad prompt! Unlike Required Question 3, which asks about your background, or Supplemental Question 2, which asks about your hobbies, this is about your identity, which includes both of those things and more! You have a lot of options here: think of past experiences that made you realize more about who you are and what you stand for. Maybe you stood up to a bully. Maybe you went stargazing with family or friends, and found yourself overwhelmed by the vastness of the universe. Just like with the other prompts, remember to be as specific as possible, and give examples.

Supplemental Short Answer Question #2

When not surveying the stars, peering through microscopes, or running through marathons of coding, Caltech students pursue an eclectic array of interests that range from speed-cubing to participating in varsity athletics to reading romance novels. What is a favorite interest or hobby and why does it bring you joy? (Max: 100 words)

This is a great prompt to answer, because it gives you the chance to show the admissions counselors more about who you are not just as a budding scholar but as a person. Here’s a chance to open up about, say, your passion for rock climbing or your increasingly-large collection of succulents. You only have 100 words, but try to go into as much detail as possible about how your hobby makes you feel. This is the place to be descriptive, and to show rather than tell.

Supplemental Short Answer Question #3

Did you have a hard time narrowing it down to just one interest or hobby? We understand – Caltech students like to stay busy, too – tell us about another hobby or interest! (Max: 50 words)

You've probably got more than one hobby you love. This is your chance to share that with admissions counselors at CalTech. You don't have much space, but help your readers understand why you're passionate about the hobby you choose. 

Caltech Essays That Worked

All this information is great, but it can still be tricky to understand exactly what Caltech wants to know until you've seen it demonstrated. Check out this accepted essay—and some tips from someone who took a serious risk—to learn more about what Caltech hopes to see in your essay!

Even though the example essays below respond to old essay prompts, there’s still a lot you can learn from them about how to write successful Caltech essays.

Martin Alternburg's Essay

I cross over the bridge into Minnesota. Out of my three sports, cross country is definitely my worst — but I continue to be hooked on it. Unlike swimming and track, my motivation to run is heavily intrinsic. I live for the long runs I take on by myself. While they rarely happen during our season, we were assigned a long run to complete over our first weekend of cross country. In reality, I was supposed to go six miles, but felt eight gave me more time to explore the home I had just returned to. My mind begins to wander as I once again find my rhythm. My train of thought while running is similar to the way one thinks in the minutes before sleep — except one has more control over how these thoughts progress and what tangents they move off of. While special relativity would be the "proper" thing to think about, especially at MITES, I revive the violin repertoire I had turned away from for so long and begin playing it in my head. I'm now at the edge of town in between the cornfields. The streaming floodlights on the open road give me a sense of lonely curiosity, reminiscent of the opening lines of Wieniawski's first violin concerto. I come up with adaptations of the melody in my head, experimenting with an atonality similar to Stravinsky's.

Martin Altenburg's essay is well-structured, using the narrative of a morning run to demonstrate all the things that run through his head, and, more importantly, all the unique traits that make him who he is.

From just these two paragraphs, we know he's a runner, that he's driven, that he strives for more than he thinks he's capable of, and that he knows music and composition. Because the essay is in a narrative format, we're able to follow this line of thinking and have it all wrapped up neatly at the end. We're drawn in by energetic and purposeful writing that also delivers us all the information we need.

Throughout the essay, Altenburg discusses his interests and his growth. His strategic use of locations in his hometown allows readers to understand where he comes from both literally and figuratively, especially the part about his beliefs and how the community he's grown up in have impacted them. All this is valuable information to an admissions office, who wants to see how you see yourself and why.

One thing to note about this essay is that it doesn't include any reference to Caltech. In fact, Altenburg used the same essay to apply to—and get into—eight different Ivy Leagues as well as some other schools. The essay was likely written as part of the Common or Coalition Application rather than as part of Altenburg's Caltech supplement, hence the lack of specificity. Your essays for the Caltech supplement should contain more specificity than this, as these essays are unique to Caltech and want to know exactly what draws you to that school above others.

Michelle Fan's Essay Reflection

"How do you believe Caltech will best fuel your intellectual curiosity and help you meet your goals?" If I had a few weeks, I might have done enough research to namedrop a few professors, rave about the strength of their computer science programs, and come up with a compelling story about all my professional goals. But I didn't have those few weeks, so I told them the unembellished, wholehearted truth: I said I have no idea what I want to do in life. All I knew was that I liked making calculator games and explosions and wanted to participate in the bread-throwing, water-dumping congregations otherwise known as Caltech house dinners. As it turns out, being yourself actually works. Shocker, I know. Colleges really do want to like you for you.

Michelle Fan doesn't post her Caltech essay directly, but she does talk about her process and what she discovered between her highly planned essays and the ones she wrote the day they were due.

Fan points out that her last-minute essays, the ones that she wrote from her heart rather than from her head, are the ones that got accepted. Though I definitely don't advocate for waiting until the same day that your essay is due to start writing it, it's a good message to keep in mind—when you're faced with an imminent deadline and you just need to get something out, your writing is probably more genuine than if you've been editing and revising it for ages.

But the big takeaway here should not be to wait until the last second to write your essay (please, don't do that!). The real lesson is that you should write in a way that is true to yourself, not a way that you think will impress admissions offices. You should be authentic and genuine, letting your personality and interests tell Caltech why you're a good fit.

If your essay looks like this, that's a good thing!

4 Key Tips for Writing a Caltech Essay

Like all college essays, there are some general things to keep in mind when working on your Caltech writing supplement. The earlier you get started, the better—take a little time to make sure that your essay is as polished as possible!

Brainstorming before you start writing will help you pick a topic that's both meaningful and impressive. Jotting down a list of ideas for each topic, no matter how silly they might feel at first impression, gives you options. Spend a little time away from your options so that you can pick the one that you feel most strongly about with less bias!

#2: Get People to Read Your Essays for You

Feedback is an important tool as a writer. Getting someone else to look at your work—preferably someone who will be honest about its shortcomings—will help you find logical holes, weird phrasing, and other errors that may creep into your work. When you feel like your essays are as polished as you can make them is a good time to hand them off to someone else. Remember, you don't have to make every change they suggest exactly as they suggest it, but if your reader is confused about something, see what you can do to make it clearer!

#3: Edit and Revise

Take that feedback you got from your reader and turn it into gold. Again, don't feel like their suggestions are always the right move, but do consider what's causing their confusion or dislike for parts of your essays. Fix them in your own voice, and re-read your essay, especially out loud, to catch any additional errors. The more time you can spend revising, the better!

#4: Be Authentic

Always remember that you're not just trying to impress Caltech with a bunch of statistics—you're trying to impress them as you. That means always staying true to yourself and striving for authenticity. Give Caltech an essay that showcases what it means to be you, not an essay that gives them what you think that they want to hear.

What's Next?

Need an even more in-depth guide to how to write a college essay ? Those tips will help you write a stellar essay from start to finish!

A strong essay is just one part of a successful Caltech application. Also look into Caltech's SAT scores and GPA requirements so you can draft an effective academic plan!

Before you send in your Caltech application, it's a smart idea to figure out how much money it's going to cost you to attend. How do Caltech's financial aid offerings measure up to tuition costs?

Melissa Brinks graduated from the University of Washington in 2014 with a Bachelor's in English with a creative writing emphasis. She has spent several years tutoring K-12 students in many subjects, including in SAT prep, to help them prepare for their college education.

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Caltech Supplemental Essays 2022-2023

Caltech supplemental essays 2022-23, quick facts- caltech essays.

• Caltech acceptance rate:   7%— U.S. News ranks Caltech as a most selective school.
• 1 (650 word) Personal Statement
• 1 (~200 word) Academic essay
• 1 (~200 word) Short answer essay
• 2 (~250 word) Short answer essays
• Caltech application: The Caltech application can be submitted via the Common App , Apply Coalition , Powered by Scoir , or through Questbridge . Make sure to check all of the Caltech application requirements. 
• Caltech supplemental essay tip: Your responses to the Caltech essay prompts are your chance to show your love of STEM . Use the opportunity to show how you would thrive in a STEM-focused environment. 

What are Caltech’s supplemental essays?

The Caltech supplemental essays are listed on the Common App website . You can also find the Caltech supplemental essays listed on Caltech’s website , alongside brief explanations of each prompt. 

Required Caltech supplemental essays and short answer questions:

1. Because of the rigorous core course curriculum, Caltech students don’t declare a major until the end of their first year. However, some students arrive knowing which academic fields and areas already most excite them, or which novel fields and areas they most want to explore.If you had to choose an area of interest or two today, what would you choose? Why did you choose that area of interest? (200 words )

2. At Caltech, we investigate some of the most challenging, fundamental problems in science, technology, engineering, and mathematics. Identify and describe two STEM-related experiences from your high school years, either in or out of the classroom, and tell us how and why they activated your curiosity. What about them made you want to learn more and explore further? (100-200 words for each experience)

3. The creativity, inventiveness, and innovation of Caltech’s students, faculty, and researchers have won Nobel Prizes and put rovers on Mars, but Techers also imagine smaller scale innovations every day, from new ways to design solar cells to 3D printing dorm décor. How have you been an innovator in your own life? (200-250 words)

4. The process of discovery is best advanced when people from diverse backgrounds come together to solve the greatest challenges in their fields. How do your past experiences and present-day perspectives inform who you have become and how you navigate the world? (200-250 words)

Optional Caltech supplemental essays:

1. If there are aspects of your identity that you feel are not captured elsewhere in this application, please provide that information below. (150 words)

2. When not surveying the stars, peering through microscopes, or running through marathons of coding, Caltech students pursue an eclectic array of interests that range from speed-cubing to participating in varsity athletics to reading romance novels. What is a favorite interest or hobby and why does it bring you joy? (100 words)

3. Did you have a hard time narrowing it down to just one interest or hobby? We understand – Caltech students like to stay busy, too – tell us about another hobby or interest! (50 words)

4. Have you had any extenuating circumstances regarding your coursework (such as limited course selection or disruptions) not described elsewhere in your application? If so, tell us about them here.

5. Some Caltech applicants engage in STEM competitions locally, nationally, and internationally (such as AIME, Science Olympiad, International Science Olympiads.) If you have received any STEM honors or awards, list them here (and scores, if applicable).

You’ll notice that the first thing stated on the Caltech supplemental essays page is that Caltech is “unapologetically STEM.” So, Caltech admissions wants to read all about your STEM-specific experiences . When considering how to write Caltech essays, look first to the “what we look for” page on the Caltech site. This is a cohesive list of what admissions looks for in applicants. 

Notably, the Caltech supplemental essays do not ask students to write a “Why Caltech essay.” However, just because there is no “Why Caltech essay” doesn’t mean that you can’t show the admissions team why you belong at a science and engineering powerhouse like Caltech . So, think of these essays as your chance to show how you’ll contribute to the Caltech community. 

Whenever possible and relevant, reference specific Caltech programs, classes, professors, and organizations that you would take advantage of. The Caltech admissions process extends beyond the admissions office alone. In fact, the Caltech supplemental essays are read directly by faculty. With a 3:1 student to faculty ratio at Caltech, it may not be a surprise that students closely interact with their professors. 

Later in this guide, we will break down each of the Caltech essay prompts in more detail. This should give you an idea of Caltech supplemental essay examples, both required and optional.

How many essays does Caltech require?

Caltech requires students to complete four Caltech essay prompts .

These Caltech essay prompts ask students to reflect on their experiences, interests, and character. You should also use the Caltech essay prompts to discuss your STEM experiences. Prime Caltech supplemental essay examples will encompass who you are within the context of STEM programs . 

Additionally, there are five optional Caltech essay prompts that students can respond to. Caltech stresses that these Caltech essays are optional. We’ll get into specifics later about these optional Caltech essays. This may help you determine if and when to respond to each of the optional Caltech supplemental essays. 

How to Write Caltech Essays

So, how do you answer the Caltech supplemental essays?

Since each of the four required Caltech essays has a 200-250 word maximum, you will want to focus on both content and execution in your writing process. As we’ll discuss, each of the Caltech supplemental essays asks students to reflect on a particular experience or interest. 

To maximize your Caltech essays, you’ll want to offer a brief summary of each experience of an event. Then, use the bulk of your essay to reveal how this experience or event influenced your broader character. Specifically, when focusing on how to write Caltech essays, reflect on your STEM experiences. You may want to write about STEM research in your Caltech supplemental essays. The admissions committee should come away from your Caltech supplemental essays with a clear conception of who you are and the kind of community member you would be on the Caltech campus. 

Caltech Essay Prompts #1 

If you had to choose an area of interest or two today, what would you choose why did you choose that area of interest (200 words).

The first of the four required Caltech essay prompts asks applicants to write “why major essays.” Caltech makes it clear that students aren’t expected to know their major. In fact, students actually can’t declare a major until after their first year. So, undecided students shouldn’t stress too much about their choice of major in these “why major essays.” Students are in no way obligated to study the major in which they reference in their why major essays. 

To answer the first of the Caltech supplemental essays, students should reflect on why they want to attend a STEM-forward university such as Caltech. Think about more than just the Caltech ranking and Caltech acceptance rate. What made you first fall in love with STEM? What specific programs are offered at Caltech and nowhere else? Are you planning to go pre med and hoping to study science at one of the best institutions for STEM? Do some research on the Caltech website in order to reference specific details on programs, internships, research, or faculty.  

Think about the “why”

After having decided an area of interest to write about in this Caltech supplemental essay, focus on the “why” part. Successful “why major essays” will explain why you need to study that major in that particular school. They’ll draw from both personal and academic experiences. Students should also discuss how studying this major would influence their future career goals. 

Let’s say you decide to focus on chemistry. You could discuss how your AP Chemistry course challenged your previous understanding of science. Or maybe a specific experiment stands out in your mind as the point when you knew chemistry was for you. Or perhaps it was the teacher that made an impact on your life. Whatever the reason, reference an academic or personal experience that told you this was the major for you. If you can get more specific than just “chemistry,” such as organic or inorganic chemistry, biochemistry, theoretical chemistry, etc., that’s even better.

Reflection Questions for Caltech Essays:

• Do you choose an area of interest that genuinely excites you?
• Does your essay talk about Caltech specific programs and offerings?
• Do you tie your study interest to your future and career goals ?

Caltech Essay Prompts #2

Identify and describe two stem-related experiences from your high school years, either in or out of the classroom, and tell us how and why they activated your curiosity. what about them made you want to learn more and explore further (100-200 words per experience).

Similar to the “why major essays,” successful Caltech supplemental essays for this prompt will show applicants’ love of STEM. However, the difference between these two Caltech essay prompts is that the first should focus on a specific area of interest offered at Caltech. The second, however, asks students what sparked their interest in STEM in general during high school. 

We probably don’t have to mention that figuring out how to get into Caltech should start with a passion for STEM (Science, Technology, Engineering , Math ) programs. That being said, students will likely have a number of experiences to reference in their Caltech essays. Start by brainstorming some of the most impactful STEM moments of your high school career. 

Are you in the robotics club and spend your free time tweaking your newest room cleaning robot? Or have you just led your team to the finals of your state’s math competition? Did you participate in a STEM summer program ? Or, maybe it’s nothing too outwardly dramatic. It could be something as simple as an experiment in biology class that ignited your curiosity. 

Make a list and choose two experiences that evoke emotion surrounding choosing STEM. Caltech admissions wants to see serious STEM applicants in these Caltech supplemental essays. Show through your two chosen experiences that you are passionate and committed to a STEM education.

When writing, you’ll also need to show why you want to further study STEM. How have these experiences shaped your future goals and intellectual curiosity? California Institute of Technology seeks students who will pursue their interests, contribute to a thriving intellectual community, and still love learning even when classes get difficult. 

• Does your draft sincerely convey your inspiration and excitement?
• Do you choose two specific STEM related experiences?
• Do you show how these experiences have affected your future studies?

Caltech Essay Prompts #3

The creativity, inventiveness, and innovation of caltech’s students, faculty, and researchers have won nobel prizes and put rovers on mars , but techers also imagine smaller scale innovations every day, from new ways to design solar cells to 3d printing dorm décor. how have you been an innovator in your own life (200-250 words).

When planning how to write Caltech essays, you may think that you only need to focus on STEM-related topics and experiences. Of course, Caltech admissions shamelessly states that they want to hear about as much STEM topics as possible in students’ Caltech supplemental essays. However, they also look for critical thinkers with the ability to problem solve. This prompt asks applicants to think about times when they had to create their own innovative solutions to problems. 

If you can think of STEM related instances, great. However, if not, don’t stress. Successful Caltech essays responding to this prompt will just show how you creatively found solutions to an issue you were facing. 

Let’s say your doorbell was broken for months. No one in your household seemed too concerned about it, but one day you miss an important package that you’d been looking forward to receiving. You decide to take matters into your own hands and fashion your own doorbell with some tips from the employee at your local hardware store. Problem solved. 

Solving problems

Any version of that hypothetical story will work in this Caltech supplemental essay. There’s a problem that needs to be solved, and you do so. If you’re stuck, try to focus on your strengths. Are you hard-working, creative, motivated, or curious? Highlight these strengths in the examples you come up with for this essay. 

You have to fall within 200-250 words, so you can use multiple anecdotes here. However, keep it focused—limit yourself to one or two topics. Make a list and choose the instances that show your most innovative, creative, and unique solutions to personal problems while highlighting your strengths. 

Reflection Questions for Caltech Essay:

• Does your essay show that you are innovative and creative?
• Do you discuss specific examples and solutions that you came up with?
• Does your essay give Caltech admissions a better picture of who you are and what you would bring to the campus?

Caltech Essay Prompts #4

The process of discovery is best advanced when people from diverse backgrounds come together to solve the greatest challenges in their fields. how do your past experiences and present-day perspectives inform who you have become and how you navigate the world (200-250 words).

Think about the most important parts of who you are. What makes you you? How have you become that way? Focus on your background and how it has shaped you. Are you about to be a first generation college student? Do you come from a small, close knit town? Has a certain culture or language greatly influenced your upbringing? What communities do you belong to? 

Background can refer to endless things; choose something that resonates deeply with you. It should be something that has greatly impacted you and how you maneuver through the world. Try to avoid cliche topics when writing this essay. Remember that your background can mean anything.

Maybe your mom is a chef at a five-star restaurant and you grew up in the kitchen. Paint a picture of life in a chaotic, fast-paced environment and what it taught you. Successful Caltech essays will be creative while answering the Caltech supplemental prompts. Start with a hook and then expand on how it has impacted you. 

• Do you draw on personal experiences from your background?
• Is it evident what an impact those experiences have had on who you are today?
• Do you show how your background affects your worldview or experiences?

Caltech Supplemental Essays: Optional Short Answer Questions

On their website, Caltech prefaces these optional essays by saying that they are “optional opportunities to show us more of your personality.” Before even getting into the optional Caltech essay prompts, admissions reiterates that they are in fact optional by stating: “Optional. We Promise.”

Basically, you can choose whether to answer these Caltech essay prompts or not. However, there are certain optional Caltech essay prompts that you should opt to answer if you want your Caltech application to be as competitive as possible. 

Optional Caltech Essays #1

If there are aspects of your identity that you feel are not captured elsewhere in this application, please provide that information below. (150 words).

If you struggled to fit all of your meaningful, personality-forming experiences and background information into the last Caltech supplemental essay, then this is your opportunity to add more. 

Continuing with our last example in the previous Caltech supplemental essay, let’s say that you wrote about growing up in a fancy restaurant’s kitchen because of your mom’s profession. Maybe in the last essay, you wrote about how you learned to think on your feet in a high-pressure environment, which has made you the decisive person that you are today. You may want to add onto this by talking about the different cultures that you experienced in the kitchen. Did you become close with the sous chef who was from Italy? Did it inspire a gap year or summer trip to Italy that changed your life?

Or maybe you want to talk about a completely different community that has shaped you. Maybe you’ve grown up training ballet in every moment of your spare time, which has built discipline and pushed you to achieve. If you can talk about how a certain community has formed you, and your story will add value to your Caltech application, then answer this prompt. 

However, if you were struggling with the last of the Caltech essay prompts that touched on background and feel as though you have nothing to add, then feel free to skip this essay.  

Optional Caltech Essays #2

When not surveying the stars, peering through microscopes, or running through marathons of coding, caltech students pursue an eclectic array of interests that range from speed-cubing to participating in varsity athletics to reading romance novels. what is a favorite interest or hobby and why does it bring you joy (100 words).

While the first of the optional Caltech supplemental essays is actually optional, we recommend considering the second of the Caltech essays as required. The goal of this Caltech supplemental essay is to see who you are outside of STEM-related hobbies and interests. While admissions wants to see that you love all things STEM, they also want to learn about your other interests. They understand the importance of having some sort of outlet from academics or work. 

Use this Caltech supplemental essay to talk about a hobby that you haven’t mentioned elsewhere. Basically, don’t just repeat your extracurricular activities. That certainly won’t do anything to help you beat the Caltech acceptance rate and impress admissions. Talk about something that will demonstrate a new skill or interest. Don’t forget to mention why this activity is worth writing about. What impact has it had on your life?

To start writing this essay, make a list of all of your activities. Hone in on the ones that are most important to you. Make sure they haven’t been mentioned elsewhere in your Caltech application. Then, choose the topic that interests you the most. 

Consider the following questions:

• Which activity elicits the most emotion? 
• What hobby could you not live without? 
• Which interest has made an impact on who you are today?

Successful Caltech essays will not only mention the activity but also explain why it brings joy. Feel free to get creative when responding to this prompt. Make sure that admissions can feel your passion for this topic. 

Optional Caltech Essays #3

Did you have a hard time narrowing it down to just one interest or hobby we understand – caltech students like to stay busy, too – tell us about another hobby or interest (50 words).

This is another of the optional Caltech supplemental essays that is definitely optional. No tricks here. If you are a true hobbyist and have various activities that define you, then feel free to take on this Caltech supplemental essay. 

Was your list of interests from the last essay spilling onto multiple pages? Great. Students writing their Caltech supplemental essays shouldn’t skimp on passion. However, these Caltech supplemental essays will have to be more succinct, as you only have 50 words. 

Stay creative, just as you were with your last essay. Show why this activity brings you such joy and how it has been such a formative part of your being. Just be sure to do so concisely. 

Caltech Supplemental Essays: Optional Academic Short Answer Questions

The optional academic Caltech supplemental essays are completely optional. Students should only submit Caltech essays for this section if they truly feel the need to. 

There is no word count listed on these Caltech essay prompts, so these Caltech supplemental essays should be concise. This isn’t the time to write a novel. Answer these Caltech supplemental essay prompts succinctly and comprehensively. 

Caltech Essay Prompts #1

Have you had any extenuating circumstances regarding your coursework (such as limited course selection or disruptions) not described elsewhere in your application if so, tell us about them here..

Successful essays to the previous optional Caltech supplemental essays are creative, captivating, and passionate . These final Caltech supplemental essays don’t need to tick the same boxes. These Caltech essays serve to fill any mysterious gaps in the rest of your Caltech application. 

This Caltech supplemental essay specifically asks you to explain any extenuating circumstances that may be noticeable in the coursework noted in your application . If you’ve had access to all the STEM, AP, and IB courses, then there’s no need to respond to this prompt. However, if you attended a school with limited resources and offerings, then you should mention that here. 

Some Caltech applicants engage in STEM competitions locally, nationally, and internationally (such as AIME, Science Olympiad, International Science Olympiads.) If you have received any STEM honors or awards, list them here (and scores, if applicable).

While these Caltech supplemental essays are included with the other Caltech essays, they’re not really essays. They actually want you to list your honors or awards related to STEM here. 

Only respond to this Caltech supplemental essay if you have received STEM related honors or awards. Don’t set the scene of the science competition where you won first place. There are other Caltech supplemental essays where you can do that. Simply list your specific STEM accomplishments.

How much does Caltech care about essays?

Through the Caltech essays, the admissions committee gains a glimpse into who you are as a student, peer, scientist, and individual. Keep in mind that they don’t know what you don’t tell them. Look at your application as a whole—including your Common App essay —and think critically about whether you have included as many facets of yourself as you can. Your Caltech application requirements should do more than just check boxes; they should tell your story , showing why you belong at Caltech. 

The Caltech ranking is #9 on U.S. News’ Best National Universities list. With the Caltech ranking so high, it makes sense that the Caltech acceptance rate is 4% . Every applicant will have an above average GPA and impressive extracurriculars. So, the Caltech supplemental essays are a chance to stand out . Successful Caltech supplemental essays will add to students’ application narratives. Planning how to get into Caltech involves thoughtfully and carefully answering the Caltech supplemental essays.  

Beyond the numbers

The Caltech essay prompts seek to understand who you are rather than just what’s on your resume. This demonstrates the value of the Caltech essays. Since Caltech is test-blind until 2025, you should maximize each essay as an opportunity to help the admissions team get to know you. Test blind schools, unlike test-optional schools, don’t want any ACT/SAT test scores submitted. Basically, Caltech won’t even look at standardized test scores. However, they will pay close attention to the Caltech supplemental essays. 

Check out this webinar to make sure you stand out as a STEM applicant. 

Five Tips for Writing Caltech Essays

Writing comprehensive and meaningful Caltech essays doesn’t have to be overwhelming. We’ve compiled our top 5 tips for how to write Caltech essays that impress admissions. 

Five Tips for Writing Caltech Essays: 

#1- meet the deadlines.

This may seem obvious, but there’s no way that you will figure out how to get into Caltech if you don’t submit your Caltech application requirements by the deadlines . The Regular Decision deadline is January 3rd . The Restrictive Early Action deadline is November 1st . Learn more about applying Early Action in our article .

#2- Don’t rush the writing process

Yes, you know you have to write and submit your Caltech essays by the deadline. However, that doesn’t mean that you should be scrambling to brainstorm, draft, edit, and revise your Caltech supplemental essays the night before they’re due. 

#3- Carefully choose your topics

This is why it’s important to give yourself plenty of time to write your Caltech supplemental essays. You only have one chance to impress the admissions committee. You should have various topics to choose from after brainstorming. Write essays on the topics that you are most passionate about. 

#4- Get creative

The greatest scientists are extremely creative innovators. Use your essays to creatively write on the topics you’re given. As long as you comprehensively and thoughtfully answer the prompt, a creative writing style will only bolster your Caltech essays.

#5- Ask for help

You certainly don’t have to take on your Caltech essays completely alone. Have someone else look at your completed Caltech essays. While they should check mechanics, also ask them for feedback on what they’ve learned about you through your Caltech essays. When implementing their feedback, maintain your own voice and style. 

Caltech Supplemental Essays — Final Thoughts

The Caltech supplemental essays are a key part of your application. The Caltech acceptance rate is low. Maximizing your admissions odds will take acing every part of the application process, including the Caltech supplemental essays. 

Remember to be clear, concise , and specific while telling authentic stories in your essays. Reference STEM-related subjects as much as possible. However, do so in a natural manner. Use the essays as a chance to supplement the quantitative parts of your application such as your grades and GPA with qualitative attributes of who you are as a student, person, and peer.

This Caltech essay guide on was written by Sarah Kaminski. Looking for more admissions support? Click here to schedule a free meeting with one of our Admissions Specialists. During your meeting, our team will discuss your profile and help you find targeted ways to increase your admissions odds at top schools. We’ll also answer any questions and discuss how CollegeA d visor.com can support you in the college application process.

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How to Write Amazing Caltech Essays

Writing amazing essays for Caltech requires careful thought, creativity, and a deep understanding of what the admissions committee is looking for. Here are some key tips to help you craft compelling Caltech essays:

A. Understand the Prompts: 

Understanding the prompts is a crucial first step when writing essays, as it ensures that you address the specific questions or topics provided by the college or university. Here's how to effectively understand the prompts:

1. Read Carefully:

Take the time to thoroughly read and analyze each prompt. Pay attention to the wording, tone, and any specific instructions or requirements mentioned. Understand what the prompt is asking you to discuss or explore.

2. Identify Key Components:

Break down the prompt into its key components to grasp its core elements. Identify the main theme or subject matter, the specific question being asked, and any subtopics or points that need to be addressed.

3. Analyze the Prompt's Purpose:

Consider why the college or university has chosen this particular prompt. Reflect on what they may be looking to learn about you through your response. Are they seeking insight into your personal experiences, intellectual curiosity, problem-solving skills, or values? Understanding the purpose will help you tailor your essay accordingly.

4. Brainstorm Ideas:

Once you have a clear understanding of the prompt, brainstorm ideas related to the topic. Think about personal experiences, academic achievements, challenges faced, or lessons learned that are relevant to the prompt. Consider how these ideas align with your overall narrative or the message you want to convey about yourself.

5. Interpret the Prompt:

Sometimes, prompts can be open-ended or require interpretation. Take the opportunity to delve deeper into the prompt and explore different angles or perspectives. Consider how you can provide a unique and insightful response that goes beyond a surface-level understanding.

6. Consider the Audience:

Keep in mind that your essay will be read by admissions officers who are looking for specific qualities and characteristics in applicants. Consider how your response can showcase your strengths, experiences, and potential contributions to the college or university community.

7. Seek Clarification if Needed:

If you have any doubts or uncertainties about the prompt, don't hesitate to seek clarification. Reach out to the admissions office or consult with your guidance counselor or teachers for guidance. It's better to have a clear understanding of the prompt before you start writing.

Understanding the prompts is essential because it allows you to focus your essay and provide a relevant and meaningful response. It ensures that you address the specific aspects the college or university is interested in, and it helps you avoid going off-topic or providing generic answers. By thoroughly understanding the prompts, you can craft a compelling and well-structured essay that effectively communicates your ideas, experiences, and personal growth.

B. Showcase Your Passion for Science and Technology: 

When writing an essay to showcase your passion for science and technology, it's important to demonstrate your genuine interest and enthusiasm in a compelling and impactful way. Here's how you can effectively showcase your passion for science and technology in your essay:

1. Personal Experiences:

Start by sharing personal experiences that ignited your passion for science and technology. Discuss a specific event, project, or moment that sparked your curiosity and enthusiasm. Explain how this experience influenced your desire to pursue studies in the field.

2. Academic Pursuits:

Highlight your academic achievements and pursuits in science and technology. Discuss specific courses, research projects, or competitions you have participated in and the impact they had on your intellectual growth. Emphasize any exceptional accomplishments or awards that showcase your dedication and commitment to the field.

3. Extracurricular Involvement:

Illustrate your passion by highlighting your involvement in extracurricular activities related to science and technology. Discuss clubs, organizations, or initiatives where you actively participate and contribute. Describe any leadership roles you have held or projects you have undertaken that demonstrate your initiative and commitment to the field.

4. Research Experience:

If you have engaged in research, share details about your research experience. Describe the specific area of study, the research questions you explored, and the methodologies used. Discuss any significant findings or contributions you made to the field. This demonstrates your ability to apply scientific methods and conduct rigorous investigations.

5. Projects and Innovations:

Highlight any personal projects or innovative ideas you have pursued in science and technology. Discuss how these projects allowed you to apply your knowledge and skills, and how they reflect your passion for pushing boundaries and finding creative solutions to real-world problems.

6. Future Goals and Impact:

Explain your long-term goals in science and technology. Discuss how you aspire to make a positive impact in the field and contribute to advancements or solve pressing challenges. Highlight specific areas of research or industries that interest you and explain why they are important to you.

7. Showcasing Curiosity:

Demonstrate your curiosity by discussing how you stay updated with the latest developments in science and technology. Mention books, journals, websites, or podcasts you follow to enhance your understanding and expand your knowledge. Showcasing intellectual curiosity reveals your dedication to continuous learning.

8. Connecting to Caltech:

If you are applying to Caltech, make connections between your passion and their specific programs, faculty, or resources. Research the school's unique offerings, such as research opportunities, collaborative projects, or renowned professors, and explain how these align with your interests and goals.

Remember to convey your passion for science and technology through vivid storytelling, engaging language, and personal anecdotes. Let your enthusiasm shine through in every aspect of your essay, from the introduction to the conclusion. By showcasing your authentic passion and dedication, you can make a compelling case for why you are an ideal candidate for further studies in science and technology.

C. Be Authentic: 

Being authentic in your college essay is crucial as it allows you to present your true self to the admissions committee. Here are some key points to consider when striving to be authentic in your writing:

1. Reflect on Your Values and Experiences:

Take the time to reflect on your values, beliefs, and experiences that have shaped your identity. Consider the moments, challenges, or accomplishments that have had a significant impact on you. These insights will help you convey your authentic self in your essay.

2. Share Personal Stories:

Use personal stories and anecdotes to bring your essay to life. Be open and honest about your experiences, emotions, and lessons learned. Sharing vulnerable moments can demonstrate your authenticity and allow the reader to connect with you on a deeper level.

3. Use Your Own Voice:

Write in a way that reflects your unique voice and personality. Avoid trying to mimic a particular writing style or using vocabulary that doesn't feel natural to you. Your essay should sound like you, conveying your thoughts and ideas in a genuine manner.

4. Express Your Passion and Enthusiasm:

Write about topics, interests, or activities that genuinely excite you. Showcasing your enthusiasm and genuine passion for your chosen field of study or extracurricular pursuits will help the reader understand your genuine interest and commitment.

5. Be Honest and Transparent:

Don't be tempted to exaggerate or fabricate experiences or accomplishments. Admissions officers can quickly identify inauthentic content, and it can harm your chances of admission. Instead, focus on presenting an honest and sincere representation of who you are.

6. Embrace Your Flaws and Failures:

It's important to acknowledge and embrace your flaws and failures as part of your authentic self. Admissions committees appreciate vulnerability and the ability to reflect on challenges and personal growth. Discuss how you've learned from setbacks and how they have contributed to your personal development.

7. Stay True to Your Values:

Your values shape who you are as a person. Ensure that your essay reflects your core values and beliefs. Discuss how these values have influenced your decisions, actions, and aspirations.

8. Seek Feedback from Others:

While it's essential to maintain your authentic voice, it can be helpful to seek feedback from trusted individuals, such as teachers, counselors, or mentors. They can provide insights and suggestions to help you refine your essay while ensuring that your authentic self shines through.

Being authentic in your college essay allows you to stand out and make a genuine connection with the admissions committee. By sharing your unique stories, expressing your true passions, and staying true to yourself, you can create a compelling and memorable essay that truly represents who you are as an individual.

D. Demonstrate Fit: 

Demonstrating fit in your college essay is about showing the admissions committee why you are a perfect match for their institution. Here's how you can effectively demonstrate fit in your writing:

1. Research the College:

Before writing your essay, thoroughly research the college or university you are applying to. Gain an understanding of its mission, values, academic programs, campus culture, and any unique opportunities it offers. This knowledge will help you tailor your essay to highlight the aspects that align with your interests and goals.

2. Connect Your Interests and Goals:

Clearly articulate how the college's offerings align with your academic and career aspirations. Explain why the specific academic programs, research opportunities, or extracurricular activities at the college resonate with your interests. This demonstrates your genuine enthusiasm and motivation to contribute to and benefit from the college's resources.

3. Showcase Shared Values:

Identify and emphasize the shared values between yourself and the college. If the institution emphasizes community engagement, social justice, or environmental sustainability, provide examples of your own experiences, projects, or initiatives that reflect these values. Showcasing alignment in values helps establish a strong connection between you and the college.

4. Mention Faculty and Resources:

Highlight specific professors, researchers, or resources at the college that are relevant to your intended field of study. Explain how their expertise, research interests, or teaching methods align with your own academic interests and goals. This demonstrates that you have done your homework and are genuinely excited about learning from and collaborating with the college's faculty.

5. Relate Experiences to College Life:

Share experiences, accomplishments, or challenges that demonstrate your ability to thrive in the college environment. Discuss leadership roles, teamwork experiences, or community involvement that showcase your readiness to actively engage with the college's campus life and contribute to the community.

6. Connect with Alumni or Current Students:

If possible, reach out to alumni or current students to gain insights into their experiences at the college. Mention any conversations or interactions you've had and how those experiences solidified your interest in attending the institution. This demonstrates your proactive approach to researching and understanding the college community.

7. Show Long-Term Vision:

Articulate your long-term goals and how attending the college will help you achieve them. Discuss how the college's academic programs, internships, or networking opportunities align with your career aspirations. Demonstrating that you have a clear vision of how the college fits into your future plans can reinforce your commitment and dedication to the institution.

8. Convey Enthusiasm:

Throughout your essay, convey genuine enthusiasm and excitement about the college. Use descriptive language and specific examples to illustrate why you believe the college is the ideal place for you to learn, grow, and make a meaningful impact. Showcasing your enthusiasm will leave a positive impression on the admissions committee.

By effectively demonstrating fit in your essay, you can convince the admissions committee that you are not only a qualified applicant but also a perfect fit for their institution. Showcasing your understanding of the college's values, resources, and opportunities will help you stand out and increase your chances of admission.

E. Use Concrete Examples: 

Using concrete examples in your writing is an effective way to enhance the clarity, credibility, and impact of your essay. Here's how you can use concrete examples to strengthen your writing:

1. Provide Specific Details:

Instead of making general statements or using vague language, provide specific details and vivid descriptions. For example, instead of saying, "I had a challenging research experience," you can say, "During my summer internship at XYZ Research Institute, I conducted experiments on the effects of temperature variation on plant growth, collecting and analyzing data from over 100 samples."

2. Use Personal Anecdotes:

Share personal anecdotes or stories that support your points or illustrate your experiences. By providing real-life examples, you bring your writing to life and make it more relatable and engaging. These anecdotes can showcase your skills, achievements, challenges, or personal growth.

3. Quantify Achievements:

Whenever possible, use numbers, percentages, or statistics to quantify your achievements. For instance, instead of saying, "I contributed to increasing sales," you can say, "I implemented a marketing campaign that resulted in a 20% increase in sales within three months." Quantifying your accomplishments adds credibility and provides a clear picture of your impact.

4. Reference Specific Events or Experiences:

If you have participated in significant events, conferences, or competitions related to your field, mention them. Discuss your role, the outcomes, and how these experiences have shaped your perspective or skills. By referring to specific events, you demonstrate your active engagement and commitment to your area of interest.

5. Incorporate Research Findings or Studies:

When discussing academic topics or making arguments, support your statements with relevant research findings or studies. Cite reputable sources and provide specific details such as the authors, publication dates, or key findings. This shows that your arguments are grounded in evidence and adds credibility to your writing.

6. Draw from Personal Observations:

If you have observed real-world phenomena or trends that are relevant to your topic, share them in your essay. Provide specific examples of what you have observed, including the context, details, and any insights or conclusions you have drawn from these observations.

7. Discuss Relevant Projects or Assignments:

If you have completed noteworthy projects, assignments, or coursework, use them as concrete examples to support your claims or illustrate your abilities. Explain the objectives, methodologies, and outcomes of these projects, highlighting your skills, problem-solving abilities, or creativity.

8. Connect Examples to Your Overall Narrative:

Ensure that the examples you use align with the central theme or message of your essay. They should contribute to a coherent and compelling narrative that showcases your unique qualities, experiences, or perspectives.

By incorporating concrete examples into your writing, you provide tangible evidence of your experiences, skills, and achievements. This not only enhances the credibility of your essay but also helps the reader visualize your story and connect with your ideas on a deeper level. Remember to choose examples that are relevant, specific, and support the main points you are making in your essay.

Remember, the essay is an opportunity for the admissions committee to get to know you beyond your academic achievements. Use it as a platform to showcase your passions, values, and intellectual curiosity. Be confident in your abilities, be genuine, and let your personality shine through your essays.

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Blog > Essay Advice , Private University , Supplementals > How to Write the Caltech Supplemental Essays

How to Write the Caltech Supplemental Essays

Admissions officer reviewed by Ben Bousquet, M.Ed Former Vanderbilt University

Written by Alex McNeil, MA Admissions Consultant

Key Takeaway

The California Institute of Technology, or Caltech for short, is a small but highly selective school that focuses primarily on STEM disciplines.

The Caltech supplemental essays are divided into two groups: required and optional. You’ll have five required essays to write (that’s quite a few!) and three optional essays to choose from.

Let’s start with the required essays.

Required Caltech Essays

Before you write anything, Caltech asks you to use a drop-down menu to choose an academic area that interests you. Don’t worry—this isn’t a declaration of your major. In fact, at Caltech, you don’t have to declare a major until the end of your first year.

But your first essay question revolves around the academic area you select, so choose whatever calls most to you right now.

Here’s the first prompt:

Why did you choose that area of interest? (200 words)

In this why this major or academic interest essay, you’ll want to be clear about the why behind your interest in that particular area.

Were you inspired by an experience or person? Is there a question that fascinates you? Is it related to a career goal?

In your answer, feel free to highlight any relevant accomplishments you have. For example, if you chose chemical engineering and you spent your junior year summer helping a chemistry professor with research, then bring it up!

This is also a place to draw upon any related references to Caltech itself. What about their program entices you? Are there any specific opportunities you’re interested in?

The next two questions go hand in hand. You’ve got 200 words to answer each of them. Here’s the main prompt:

At Caltech, we investigate some of the most challenging, fundamental problems in science, technology, engineering, and mathematics. Identify and describe two STEM-related experiences from your high school years, either in or out of the classroom, and tell us how and why they activated your curiosity.  What about them made you want to learn more and explore further?

STEM experience/activity #1

STEM experience/activity #2

These essays are your opportunity to highlight special projects or accomplishments that show magnitude, reach, and impact .

Because Caltech asks for STEM-related experiences or activities, you’ll need to choose something that relates to science, technology, engineering, or math. This isn’t the time to take a creative twist on the prompt (”Writing poetry was like science to me!”) because your essays will be read alongside applications from some of the best high school scientists in the world.

As you answer, don’t forget to address the three main questions of the prompt:

Identify and describe the experience. It can be in or out of the classroom.

Explain how it “activated your curiosity.”

Explain how it made you want to learn and explore more.

Feel free to nerd out a little and go in-depth on a topic you’re passionate about. It can complement, be related to, or be completely different from your answer to prompt #1. Just think about how all of your supplemental essays will work together to form one overall narrative .

The creativity, inventiveness, and innovation of Caltech’s students, faculty, and researchers have won  Nobel Prizes  and put  rovers on Mars , but Techers also imagine smaller scale innovations every day, from new ways to design solar cells to 3D printing dorm decor. How have you been an innovator in your own life? (250 words)

In your essay, you can take “innovator” literally or figuratively. Either way, you’ll want to balance your answer to this question with your answers to the previous two.

If you’ve literally innovated something, now’s your time to shine. Did you create an app to help your classmates study for your French final? Did you design a website for your mom’s small business or develop a code to count cars ? Draw out the key points for your admissions officers, and make sure it’s clear why your innovation mattered (to you and to those around you).

Or, if you haven’t literally innovated something, you might think about innovation more metaphorically and use this prompt to show admissions officers a softer or more creative side of yourself. Maybe you innovated a new way to teach algebra to your tutee or rediscovered the design for The Apple Picker 5000 that you drew up when you were five years old. Just be sure to draw out what it all means for who you are as a technical innovator now.

The process of discovery is best advanced when people from diverse backgrounds come together to solve the greatest challenges in their fields. How do your past experiences and present-day perspectives inform who you have become and how you navigate the world? (250 words)

By this point, you’ve shown Caltech admissions officers your academic and technical side and maybe let them in on a few important stories from your life.

With this final required prompt, it’s time to dig a little deeper. This is a diversity essay .

Caltech admissions officers will know from the rest of your application why you’ll make a good scientist. Now you need to show them who you are as a person.

Feel free to write about any area of your identity that has shaped your perspectives. Also pay attention to the wording of the prompt: admissions officers want to know about your past experiences AND present-day perspectives. What’s more, they specifically want to know how they inform 1) who you’ve become, and 2) how you navigate the world.

You could write about a particular part of your upbringing, what it’s like to live in the world with a particular identity, or even an impactful experience you had that changed your perspective.

Optional Short Answer Questions

Here’s what Caltech says about the “optional” designation: “Optional. We promise.”

Take their word for it. Choosing not to answer these questions won’t automatically get your application tossed into the reject bin.

But choosing not to answer them is also a choice not to add to your cohesive application narrative . Answering the questions can give admissions officers more information to get to know you with (and therefore more data to base an admissions decision on!).

Let’s take a look at the optional prompts.

If there are aspects of your identity that you feel are not captured elsewhere in this application, please provide that information below. (150 words)

You may have covered everything you needed to cover in the last required prompt, but this prompt gives you more space if there’s something else you want to convey.

Applicants answering this prompt might choose to write about gender identity or sexuality, race or ethnicity, ability or disability, class, or general background information.

Whatever you write about, make sure there’s a clear takeaway for admissions officers.

When not surveying the stars, peering through microscopes, or running through marathons of coding, Caltech students pursue an eclectic array of interests that range from speedcubing to participating in varsity athletics to reading romance novels. What is a favorite interest or hobby and why does it bring you joy? (100 words)

The other required and optional prompts are all pretty straightforward. But this one gives you leeway to show some personality.

Note the emphasis on “joy” in the prompt. This isn’t just about a hobby that you’ve excelled at or participated in for a long time. It’s about describing something that makes you genuinely happy, even if it’s not a world-changing activity.

Think of your answer to this prompt as the sprinkles on top of your application. It’s a way to have some fun and add a little narrative diversity.

Did you have a hard time narrowing it down to just one interest or hobby? We understand – Caltech students like to stay busy, too – tell us about another hobby or interest!  (50 words)

And here you can elaborate just a little more on a secondary hobby if you’d like. Just make sure it’s actually adding valuable information to your file, otherwise admissions officers may simply skim it and move on.

And with that, you’ll have written all your Caltech supplemental essays! Remember: you have to answer the first four, but you aren’t required to write any in the last set unless you want to.

Whichever ones you write will all work towards your cohesive application narrative , so think about them each as an opportunity to advocate for your admission. Make them count.

You’ve got this!

Liked that? Try this next.

How to Write Supplemental Essays that Will Impress Admissions Officers

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How to Write a Diversity Supplemental Essay

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How to Write the Caltech STEM Experience Essay

Caltech’s essay prompt emphasizes its commitment to tackling some of the most challenging questions in STEM. In essence, they want to gauge your genuine curiosity, passion, and drive in these fields.

Here’s how you can write a strong response. If you want more advice on Caltech’s essays, see our full Caltech essay breakdown .

Understanding the Prompt

Prompt: At Caltech, we investigate some of the most challenging, fundamental problems in science, technology, engineering, and mathematics. Identify and describe two STEM-related experiences from your high school years, either in or out of the classroom, and tell us how and why they activated your curiosity. What about them made you want to learn more and explore further? (200 words per experience)

Caltech is looking for specific instances where you were actively engaged in STEM. This can be within a class, a club, a project, a competition, or any other related experience.

As you reflect on which experiences to mention, make sure to those that truly piqued your interest and drove you to delve deeper. It’s one thing to be curious, but taking that next step to learn more showcases initiative, drive, and passion.

Crafting Your Essay

Here are the four steps you want to take as you’re writing.

1. Start with a brief introduction of the experience. Was it a physics class experiment? A coding challenge? A robotics competition?

2. Elaborate on what you did. Be specific. Instead of saying you “worked on a project,” explain that you “designed a water filtration system using charcoal and sand.”

3. Identify the moment or aspect that triggered your curiosity. Was it an unexpected result? A challenging problem? A real-world application?

4. Discuss the steps you took post-experience. Did you read more on the topic? Join a related club? Undertake a new project? Your actions should showcase your drive.

Now, let’s get into some examples!

Caltech STEM Experience Example Essays

In my junior year, our school’s Robotics Club decided to enter the annual Robotics Challenge. From videos of past competitions, it was clear that robots could achieve some pretty amazing things, and we were eager to try our hand. I got the task of programming our robot’s pathfinding, which I thought would be a cool challenge.

Initial tests, however, were not promising. Our robot, which we affectionately dubbed ‘Rover’, seemed to have a mind of its own, often getting lost or stuck in corners. This wasn’t what I expected, and instead of feeling defeated, I got really curious. Why was our algorithm struggling?

After some deep dives online and discussions with our club advisor, I stumbled upon the A* algorithm. It was touted as one of the best for pathfinding. Many late nights were spent poring over code, making adjustments, and running trial after trial.

The moment ‘Rover’ smoothly navigated our test maze was unforgettable. Beyond just the success, this experience opened my eyes to how vast and complex robotics can be. It also sparked a newfound interest in AI and how machines can learn and adapt.

Essay 1 Feedback

This essay feedback was provided by Ivy, CollegeVine’s AI . Try it for free with your own essay!

This experience effectively showcases your problem-solving skills and determination in the field of robotics. Your narrative demonstrates your curiosity and passion for learning about pathfinding algorithms. I would rate this experience a solid 8.5 out of 10. The strength of your description lies in the detailed example and your genuine interest in overcoming the challenge.

• Your experience provides a clear narrative of your involvement in the Robotics Club and the challenge you faced.
• You effectively convey your curiosity and determination to understand and improve the robot’s pathfinding algorithm.
• The experience demonstrates your ability to research, learn, and apply new concepts in a practical situation.

Suggestions

• Consider providing a brief explanation of the A* algorithm and how it improved ‘Rover’s’ pathfinding. This will help the reader understand your discovery better. (Small impact)
• Share any lessons you learned from this experience and how they may have influenced your perspective on robotics or problem-solving. (Small impact)
• Briefly mention how this experience has shaped your future aspirations or interests in the field of robotics, AI, or related areas. (Small impact)

What admissions would take away

Admissions officers would view you as a determined, curious, and resourceful student with a passion for robotics and problem-solving. Your experience demonstrates your ability to research, learn, and apply new concepts in practical situations.

In a chemistry lab during sophomore year, our assignment was to synthesize aspirin. The process, on paper, seemed pretty direct, but science in practice can sometimes be unpredictable. My first result wasn’t the expected pure white but had an off-white hue.

Rather than just accepting it, I was determined to understand why. Had I missed a step or mis-measured an ingredient? I turned to additional resources, beyond our classroom’s scope, and delved into the intricacies of the synthesis process. I found out that there are many variables at play, from temperature control to precise measurements.

Armed with new knowledge, I approached the lab again. With more attention to detail and a better understanding of the reactions, my second attempt was markedly improved.

This wasn’t just a lesson in making aspirin; it underscored how deep and layered even seemingly simple reactions can be. It made me appreciate the precision required in chemistry, especially when thinking about its implications in something as important as drug development.

Overall Feedback

This experience effectively highlights your curiosity and determination in the field of chemistry. It demonstrates your commitment to understanding the underlying processes and your ability to think critically about the subject matter. I would rate this experience an 8 out of 10. The strength of your description lies in the detailed example and your genuine interest in learning.

• Your experience provides a clear narrative of your involvement in the chemistry lab and the challenge you faced.
• You effectively convey your curiosity and determination to understand the intricacies of the synthesis process.
• The experience demonstrates your willingness to go beyond the classroom to explore complex concepts and apply them in practical situations.
• Explore how your newfound appreciation for precision in chemistry has shaped your perspective on the subject or influenced future projects. (Small impact)
• Share any lessons you learned from this experience and how they may have influenced your approach to chemistry or problem-solving. (Small impact)
• Briefly mention how this experience has shaped your future aspirations or interests in the field of chemistry or related areas. (Small impact)

Admissions officers would view you as a curious, determined, and resourceful student with a passion for learning and problem-solving in chemistry. Your experience demonstrates your ability to go beyond the classroom to explore complex concepts and apply them in practical situations.

• Be Genuine: Authentic experiences where your curiosity was genuinely activated will always come across as more sincere and impactful.
• Show Initiative: Caltech values students who don’t just stop at wondering, but take the initiative to seek answers.
• Proofread: Ensure clarity, coherence, and error-free content. You can use Ivy, CollegeVine’s AI for free feedback. 

Remember, this essay provides Caltech a glimpse into your analytical mind, your curiosity, and your proactive approach to learning.

Related CollegeVine Blog Posts

California Institute of Technology (Caltech) 2023-24 Supplemental Essay Prompt Guide

Regular Decision Deadline: Jan 3

You Have: 

California Institute of Technology (Caltech) 2023-24 Application Essay Question Explanations

The Requirements: 3 essays of 200 words; 1 essay of 400 words; 3 short optional essays

Supplemental Essay Type(s): Community , Activity , Oddball , Why , Short Answer

In addition to the personal essay in the Common Application or the Coalition Application, applicants to Caltech must complete required supplemental short-answer essays. These are questions that the Admissions Committee has devised to get to know you better as a student, scientist, and person, and ascertain who you’ll be on our campus. 

We don’t want essay writing to be intimidating, but we know it often is. We have put together some advice to help you get started writing your Caltech supplemental essays, so you can worry less and enjoy the application process.

Because of the rigorous courses in the core curriculum, caltech students don’t declare a major until the end of their first year. however, some students arrive knowing which academic fields and areas already most excite them, or which novel fields and areas they most want to explore., if you had to choose an area of interest or two today, what would you choose , please indicate your proposed area of interest at caltech. [choose an option from a dropdown list].

There’s only one trick to selecting a major or generating a straightforward list of your academic interests: be honest. If you already know what you want to major in or have it narrowed down to two choices, you’re set! Don’t waste time trying to strategize because choosing anything other than your true interests would be a misrepresentation of who you are and a disservice to yourself and the admissions office. This assignment will, no doubt, be most challenging for the undecideds, but ask yourself: how can you use this opportunity to reveal something about what excites you intellectually or academically? 

Why did you choose that area of interest?  (200 words)

You’ve only got 200 words, but if you chose wisely in the previous question, answering this one should be easy as pie. Whether you listed one or two interests, your goal here is to tell a cohesive story about your intellectual curiosity. Ideally, you should try to recount an anecdote that illustrates your engagement with your chosen field or demonstrates your ability to link together seemingly disparate fields. Perhaps you’re interested in both philosophy and astrophysics because each offers a way for you to contemplate our place in the universe. This is a great opportunity for you to explain how your intellectual interests relate to who you are as a person. Don’t waste it!

At Caltech, we investigate some of the most challenging, fundamental problems in science, technology, engineering, and mathematics. Identify and describe two STEM-related experiences from your high school years, either in or out of the classroom, and tell us how and why they activated your curiosity. What about them made you want to learn more and explore further? (200 words each)

Stem experience/activity #1* , stem experience/activity #2*.

For these two short answer responses, we recommend using concrete sensory details to pull your reader into the story. Strong responses will not only describe the project at hand, but also make the readers feel like they’re in the room where it happened (“the room where it happened” – Hamilton ). What about the project captured your attention and curiosity? How did you develop your skills or interest in STEM as a result of your participation? How did this experience lay the foundation for your future STEM-related pursuits? If you’re applying to Caltech, we’re willing to bet you have a few experiences to choose from, so we recommend writing about the two that were most intellectually engaging for you.

The creativity, inventiveness, and innovation of Caltech’s students, faculty, and researchers have won Nobel Prizes and put rovers on Mars. But Techers also imagine smaller scale innovations every day, from new ways to design solar cells to how to 3D print dorm decor. How have you been a creator, inventor, or innovator in your own life? This question can be answered as a written response (200-250 words).*

Admissions is seeking to invite movers and shakers to campus who are excited and motivated to turn their dreams into reality. Whether you’ve been experimenting with robotics or spending your summers researching ways to integrate renewable energy into daily life, this is the place to share your story. Show admissions that you are not only planning to be an innovator, but have already taken steps to incorporate this approach in your day-to-day activities. The more specific details you can incorporate into your essay, the more sincere and personal it will feel (and be!). 

Caltech’s mission – to cultivate learning, discovery, and innovation for the benefit of humanity – relies on its community members embracing our Mission-Based Values, which include:

1) openness and enthusiasm for having preconceptions challenged, 2) respect and appreciation for the idea that, while we are all members of the same community, the opportunities we’ve had to develop, showcase, and apply our talents have not been equal, 3) passion for the ideal that science can and should meaningfully improve the lives of others, share what one or more of these values evokes for you.* (400 words).

For this prompt, Caltech wants to know how its mission resonates with you, so read over their values, then think about how they overlap with your own. This could be a great opportunity to recycle an essay you’ve written about engaging in conversation with someone who holds opposing beliefs (Value 1), embracing diversity and inclusion (Value 2), or your love for all things science (Value 3). If you don’t have any material to recycle here, don’t fret, odds are you have something to say about at least one of these three values. Maybe you’ve been developing and testing your hypotheses since you were a little kid and you are just as excited when they prove true as when they are proved wrong! Perhaps inclusivity and equity are important to you because you know what it’s like not to have the same opportunities as your peers and you’ve worked hard to achieve your goals regardless. Whatever your story is, be sure to avoid generalizations and, instead, provide concrete examples. For example, anyone can write that they are ambitious and resilient, but not everyone is going to be able to exhibit those traits with real-life examples. Specifics are what stick in admissions’ minds!

We know, we know … you see optional and start to wonder if we mean it. But in this section, we truly do! See these as completely optional opportunities to show us more of your personality. 

Optional. we promise., if there are aspects of your life or social or personal identity that you feel are not captured elsewhere in this application, please tell us about them below.  (150 words).

Caltech knows that you are a multifaceted person, that your identity cannot be boiled down to nuggets of information on an application. That’s why admissions is giving you this (albeit small) space to expand on an aspect of your identity. Scroll through your application (personal statement, activity list, major selection) and take a moment to think about what you haven’t been able to include yet. Perhaps you want to write about your identity as a first-born daughter of immigrants or the daily yoga practice that grounds you and enables you to better connect with people and places around you. Regardless of what you choose to write about, you don’t have a lot of words to play with, so we recommend brevity!

Did you have a hard time narrowing it down to just one interest or hobby? We understand – Caltech students like to stay busy, too – tell us about another hobby or interest! (50 words)

This is a great place to write about a hobby or interest that is, maybe, newer to you, one you’ve spent less time on. Have you been learning how to play guitar? Did you start taking kayaking lessons this summer? You only have 50 words for this response, so try not to choose a topic that will require too much explaining. Instead, dive right into what makes you lose track of time!

Have you had any extenuating circumstances (such as limited course selection, inconsistent grades, or disruptions), that have affected your coursework, but that are not described elsewhere in your application? If so, tell us about them here. (150 words)

This is Caltech’s version of the Additional Info essay, which means that, unless you have something crucial to explain to admissions, and there is absolutely NOWHERE else on the application for you to write about it, you should skip this essay. Think about it: if you were an admissions officer, would you really want to read one more essay per applicant? That being said, this essay is perfect for students who have encountered extenuating circumstances and need an opportunity to explain them. In fact, we recommend saving those details for an Additional Info essay, so that you can use the rest of your application to highlight other parts of your amazing personality. So, if something has happened that affected your academic performance, this is a great opportunity to give the 4-1-1 (that means “information” because, in the Stone Age of the late 1900s, we used our rotary phones instead of the internet). 

Some Caltech applicants engage in STEM competitions locally, nationally, or internationally (e.g., AIME, Science Olympiad, International Science Olympiads). If you have received any STEM honors or awards, list them here (with scores, if applicable).

This prompt is as dry as they come. If you’ve earned any STEM honors or awards, this is the place to list them. If you don’t have anything to add here, feel free to skip this prompt altogether!

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September 14, 2023

2023-2024 Caltech Supplemental Essay Prompts

The California Institute of Technology has released its supplemental essay prompts for the 2023-2024 admissions cycle. The school, one of the last among America’s elite universities to release their essays for applicants to the Class of 2028 , asks applicants to respond to several required and optional essays as well as short answers. These essays are, of course, in addition to The Common Application ’s Personal Statement. So, what are this year’s Caltech essays and how should they be approached? Let’s dive in!

2023-2024 California Institute of Technology Essay Topics and Questions

Required academic question.

Because of the rigorous courses in the core curriculum , Caltech students don’t declare a major until the end of their first year. However, some students arrive knowing which academic fields and areas already most excite them, or which novel fields and areas they most want to explore. (Max: 200 words)

If you had to choose an area of interest or two today, what would you choose? Why did you choose that area of interest?

This essay prompt is a straight-up-the-middle Why Major essay. Caltech’s admissions committee wants to understand the origin story of an applicant’s interest in the discipline they wish to study at Caltech. Yet, students should be sure to set that origin story during their high school years. Too often, students share stories about how they developed their academic interests as children. Admissions officers want to hear how students think now — not then.

Required Short Answer Questions

1. At Caltech, we investigate some of the most challenging, fundamental problems in science, technology, engineering, and mathematics. Identify and describe  two  STEM-related experiences  from your high school years , either in or out of the classroom, and tell us how and why they activated your curiosity. What about them made you want to learn more and explore further?  (Min: 100/Max: 200 words for each experience)

Through anecdotes, this essay allows applicants to show rather than tell why they love the STEM fields. Students could write about a lab experiment from a physics course. They could write about independent research they did in engineering. The opportunities are endless — so long as the stories showcase a student’s passion for learning.

And note how Caltech’s admissions committee emphasizes that the examples should stem from high school. Remember when we said how examples should always stem from high school rather than childhood? Here, you’ll see the advice straight from the horse’s mouth.

As to the word count, students have 400 words for this essay. As Ivy Coach has long espoused on the pages of this college admissions blog , students should  always  use all of the real estate they’re given to make their case. Students should thus write up to the maximum word count of 400 words!

2. The creativity, inventiveness, and innovation of Caltech’s students, faculty, and researchers have won  Nobel Prizes  and put  rovers on Mars . But Techers also imagine smaller scale innovations every day, from new ways to design solar cells to how to 3D print dorm decor. How have you been a creator, inventor, or innovator in your own life?  (Min: 200 / Max: 250)

This essay is another excellent opportunity for students to share one small story about how they’ve developed something in the STEM field. And the example does not need to stem from award-winning research. It doesn’t need to be anything formal.

A great example would be seeing a problem on a bike ride to school and figuring out how to fix it. Maybe a student’s bike went over a pothole, so they designed a way to light up a grid on the road to identify when potholes were forthcoming. Caltech’s admissions committee wants to see how applicants think and how they’re creators and inventors even in life’s small moments.

3. Caltech’s mission – to cultivate learning, discovery, and innovation for the benefit of humanity – relies on its community members embracing fundamental Caltech values :

• Openness and enthusiasm for having preconceptions challenged
• Respect and appreciation for the idea that, while we are all members of the same community, the opportunities we’ve had to develop, showcase, and apply our talents have not been equal
• Passion for the ideal that science can and should meaningfully improve the lives of others

Share what one or more of these values evokes for you.  (Min: 200 / Max: 400)

In this essay, through one small example, applicants should showcase how they want to explore STEM to make our world better. Too often, students express grandiose plans — like ending climate change through the power of STEM. Instead, applicants would be better off focusing on a small issue and then highlighting how they hope to address it in their lifetime. 

Optional Short Answer Questions

1. If there are aspects of your life or social or personal identity that you feel are not captured elsewhere in this application, please tell us about them below.  (Max: 150 words)

While the United States Supreme Court outlawed Affirmative Action , Chief Justice John Roberts penned a loophole in the majority opinion. As he wrote, “Nothing in this opinion should be construed as prohibiting universities from considering an applicant’s discussion of how race affected his or her life, be it through discrimination, inspiration, or otherwise.”

This essay allows students to capitalize on this loophole by sharing their stories. And students do not need to be underrepresented minorities to have a story to tell here. Applicants could focus on their faith, community, sexual orientation, or gender identity — the possibilities are endless.

2. When not surveying the stars, peering through microscopes, or running through marathons of coding, Caltech students pursue an eclectic array of interests that range from speed-cubing to participating in varsity athletics to reading romance novels. What is a favorite interest or hobby, and why does it bring you joy?  (Max: 100 words)

While having a passion for the STEM fields is a prerequisite for Caltech, the admissions committee wants to know that you have interests beyond these disciplines. So here’s an excellent opportunity for applicants to showcase their love for poetry, history, foreign language, anthropology, or any other field. As long as applicants showcase their intellectual curiosity through their storytelling — ideally in an area outside of STEM — they’re on the right track.

3. Did you have a hard time narrowing it down to just one interest or hobby? We understand – Caltech students like to stay busy, too – tell us about another hobby or interest!  (Max: 50 words)

We encourage students to write about a hobby that highlights their intellectual curiosity. So many options would work here. It doesn’t need to be a hobby in which a student changes the world. Yet, it should showcase their intellectual curiosity. If they love tie-dying t-shirts, they should focus on the mathematics of creating extraordinary patterns.

Optional Academic Short Answer Questions

1. Have you had any extenuating circumstances (such as limited course selection or disruptions), that have affected your coursework, but that are not described elsewhere in your application? If so, tell us about them here.

While we at Ivy Coach are  always  in favor of responding to all optional essays — because no optional essay should be considered  optional  in elite college admissions — this prompt doesn’t apply to all students

 In fact, unless a student needs to explain a disruption in their learning during their high school years that is apparent on their transcript, we encourage the student not to answer this prompt. Too many students choose to answer prompts like these, and they do indeed come across as complainers. It does their candidacy a great disservice.

2. Some Caltech applicants engage in STEM competitions locally, nationally, or internationally (eg., AIME, Science Olympiad, International Science Olympiads). If you have received any STEM honors or awards, list them here (with scores, if applicable).

Hopefully, applicants have so many STEM awards that they couldn’t fit them all in the honors section of their Common Application. Here is the place to list them. And it should be a list — not an essay. It’s always critical to adhere to the directions.

Ivy Coach’s Assistance with Caltech Essays

If you’re interested in optimizing your case for admission to Caltech by submitting essays that will wow Caltech admissions officers, fill out Ivy Coach ’s free consultation form , and we’ll be in touch to outline our college counseling services for seniors.

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Writing the Caltech Supplemental Essays 2021-2022

Padya Paramita

August 24, 2021

If you’re planning to apply to the California Institute of Technology, one of the key ways to distinguish yourself from fellow STEM-oriented applicants is to take full advantage of the Caltech supplemental essays 2021-2022 . Use the prompts provided by this competitive Pasadena institution to show how you hope to grow as a young scientist and to describe the ways you would contribute to the Caltech campus.

The supplemental questions are designed to learn more about your interests and goals within STEM disciplines, as well as determine how you would fit in with the collaborative and creative Caltech campus. To guide you through the four Caltech supplemental essays 2021-2022 , I’ve outlined the prompts, the dos and don’ts of your responses, and more tips to ensure a successful essay-writing process.

Prompts for the Caltech Supplemental Essays 2021-2022

Describe three experiences and/or activities that have helped develop your passion for a possible career in a STEM field. (10-120 words each)

The first question in the Caltech supplemental essays 2021-2022 may just require a short response, but that doesn’t mean your answer is any less important. Think about ways to frame your three most significant activities related to science, technology, engineering, and math. Don’t be tempted by the minimum word count of “10” and just name the activities. You need to stand out from thousands of applicants who bring a lot of experience in STEM areas. In your answer, add a sentence showing how each one helped you realize that this is the field for you. If you have space, note how you have made an impact in the activity, whether you’ve involved a greater community, and how you hope to continue your STEM education in relevance to the activity. 

While you have been asked to describe three different activities, they should have some sort of connection to each other, as you don’t have enough space to go over multiple fields you enjoy. Colleges appreciate when your interests are specialized. Moreover, a connection between the three allows you to convey a more elaborate picture of yourself, letting admissions officers know exactly how you would contribute to Caltech. Think about what the combination of your chosen entries conveys about you. This could range from highlighting your teamwork skills to reflecting on your specific niche interest in STEM. Making sure your answers aren’t all over the place is a good way to stay organized when tackling multiple supplemental essays. 

Much like the life of a professional scientist or engineer, the life of a "Techer" relies heavily on collaboration. Knowing this, what do you hope to explore, innovate, or create with your Caltech peers? (250-400 words)

Even though this question doesn’t specifically ask “Why Caltech,” admissions officers want to know that you have made a well-informed decision in applying. Your essays should be tailored to Caltech - they shouldn’t be applicable to other STEM-focused colleges such as MIT or Harvey Mudd as well. The school wants to see that you’re an ambitious individual, and they want to learn how you work in a team and where your interests within STEM lie. 400 words should be enough to get your points across, but at the same time, you have to use your allotted space wisely.

Think about your favorite topics within STEM and your biggest goals. How have you worked to achieve them so far? Mention experiences that reflect your collaboration skills. However, the majority of your essay should focus on how you hope to bring your skills to the Caltech campus, and how you hope to engage the Caltech community in your endeavors. Mention any specific courses, research opportunities, and programs that appeal to you, emphasizing how working alongside your peers in these initiatives can encourage growth and help you get closer to achieving your goals. Don’t miss out on the chance to let admissions officers see that you have done the research and know about the different opportunities available at the university. 

Caltech students are often known for their sense of humor and creative pranks. What do you like to do for fun? (250-400 words)

The third prompt among the Caltech supplemental essays 2021-2022 diverts from the academic approach. Admissions officers want to know how you would fit into the community. Since the question specifically mentions sense of humor and creative pranks, Caltech would appreciate any examples which showcase a playful of you. Now if you’re not the number one jokester in your high school, that’s okay. You could still find ways to depict your humorous and creative side.

Pick one or two activities that you enjoy the most - and bring up any anecdotes that portray you as a fun and creative individual. Remember to stay away from activities that you think the admissions officers want to hear. If you don’t spend your free time drawing portraits or making films don’t write about that. Nor should you say that you enjoy eating and sleeping unless you have a very unique take on these everyday activities. Think about what you like to do when you have a long weekend, or what you do when you have the most fun with your friends. Find innovative ways to bring light to a side of you that isn’t mentioned in the rest of your application. 

Download all supplemental essay prompts here!

The process of discovery best advances when people from various backgrounds, experiences, and perspectives come together. How do you see yourself contributing to the diversity of Caltech's community? (Your response should range between 250-400 words)

The word “diversity” goes beyond your background. Yes, you can be diverse in your race and ethnicity, but you can also distinguish yourself through unique activities and experiences. Since most Caltech applicants are skilled in math and science, your answer to this question can help distinguish you from peers with similar academic interests. After all, Caltech doesn’t want every single student to bring the same attributes. To brainstorm experiences that separate you from the rest of the highly talented applicant pool, you need to jot down some standout experiences you’ve had. This could range from aspects of your identity such as your ethnicity or sexual orientation to an unusual extracurricular activity or hobby, such as calligraphy or competitive eating.

Don’t use up all of the allotted space describing the part of yourself that you’ve chosen to highlight. Discuss anecdotes that clarify to the admissions officers why this quality makes you exceptional. Finally, remember the prompt: Caltech wants to know how this trait can help you contribute to the campus. You should be specific in exactly how and where you are going to contribute, instead of broadly alluding to being a valuable Caltech community member. Will this part of you help you make standout additions to classroom discussions or extracurricular activities? Your essay should focus on connecting the way your perspective has been shaped to how you can make an impact on your fellow Techers.

Additional Tips to Answer the Caltech Supplemental Essays 2021-2022

• Make Sure You’ve Done School Research - You may have noticed that the Caltech supplemental essays 2021-2022 don’t ask an explicit “Why Caltech” question. That doesn’t mean that you shouldn’t thoroughly explore the Caltech website before sitting down to write your responses. You need to know what makes the school unique and which resources call out to you the most. This knowledge will come in handy when writing your essays, as you’ll know how to tailor them to demonstrate knowledge of programs and opportunities at this prestigious institution.
• Prioritize Adding New Information About Yourself - The Caltech supplemental essays 2021-2022 are geared for the reader to get to know you better. If you repeat topics you’ve already covered in your activities list or Common App personal statement, you’ll go against the whole purpose of these essays! Make sure answers to each prompt show a new side of you that admissions officers previously did not know. This helps add depth to your application, and convince the reader more and more that you could be a good fit for Caltech.
• Be as Specific in Your Interests as Possible - Here’s the thing: everyone applying to Caltech is interested in science and math. Adding generic statements about your love for STEM as a whole is far from enough. STEM covers a huge array of topics, and each category is broad in itself. In writing your Caltech supplemental essays 2021-2022 , you need to find ways to iterate which specific part of STEM you’re passionate about. Don’t just say engineering or biology. Go deeper. Is it molecular biology? Is it marine engineering? Make sure you give admissions officers the chance to understand the depth of your curiosity and knowledge.

Caltech admissions officers want to know that you’re not just applying for the sake of attending any strong STEM school. Use the Caltech supplemental essays 2021-2022 to convince admissions officers that not only have you made a well-informed decision, but you would make valuable contributions if accepted to this selective institution.

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How to write the caltech essays: the marvelous guide to success.

Located in Pasadena, California, the California Institute of Technology has an acceptance rate of 8% and is a world-renowned science and engineering institute with one of the nation’s lowest student-to-faculty ratios.

Despite its small size , Caltech’s contributions in science and research have led to international recognition, including 38 Nobel Prizes.

• The school also manages NASA’s Jet Propulsion Laboratory and owns and operates large-scale research facilities and a global network of astronomical observatories.

The self-stated mission of this private university is to “investigate the most challenging, fundamental problems in science and technology in a singularly collegial, interdisciplinary atmosphere, while educating outstanding students to become creative members of society.”

If this mission statement appeals to you, you might be a great fit for Caltech.

• But earning that acceptance letter isn’t easy: Caltech accepts only about 8% of applicants, building a freshman class of just 230 new students.

Luckily, we’re here to help with one of the most challenging parts of the application: the Caltech essays.

We’ll provide all the info and tips you need to write essays that will help you stand out from the competition.

Let’s get started!

What Are the Caltech Essay Requirements?

Caltech accepts both the Coalition Application and the Common Application , with no preference between the two platforms.

No matter which of these options you choose, you’ll also need to complete the Caltech Questions.

The university explains that these questions help them evaluate “your passion for science, technology, engineering, and math.” They’re looking to find out “what excites you, what you value, and which of Caltech’s resources appeal most to you.”

This supplement consists of four short answer questions:

The short answer questions are:

Describe three experiences and/or activities that have helped develop your passion for a possible career in a STEM field. Use the separate spaces provided below, one for each STEM experience and/or activity. (120 words for each activity?) Much like the life of a professional scientist or engineer, the life of a “Techer” relies heavily on collaboration. Knowing this, what do you hope to explore, innovate, or create with your Caltech peers? (Your response should range between 250-400 words.) Caltech students are often known for their sense of humor and creative pranks. What do you like to do for fun? (Your response should range between 250-400 words.) The process of discovery best advances when people from various backgrounds, experiences, and perspectives come together. How do you see yourself contributing to the diversity of Caltech’s community? (Your response should range between 250-400 words.)

What Kind of Student Does Caltech Want?

When applying to an extremely selective school like Caltech, it’s important to consider what type of student admissions officers are trying to find.

The goal here isn’t to lie and tell admissions officers what they want to hear; it’s to showcase the aspects of your personality and background that fit best with Caltech’s criteria.

On the university’s website, Caltech writes of freshman applicants, “All we ask is that you share the typical Caltech student’s unbridled sense of curiosity and extraordinary aptitude for and interest in science, engineering, and technology.”

They further explain that they attempt to answer several crucial questions as they review your application:

• Are you academically prepared?
• Have you demonstrated a consistent interest in science, technology, engineering, or math? (Are you ready to push the boundaries of scientific discovery?)
• How will you impact Caltech’s campus community?

Overall, the university is looking for students who not only excel in the STEM fields but are also passionate and excited about exploring these disciplines.

They want creative, curious students who can help make innovative contributions to society.

Caltech also values students who are collaborative and trustworthy enough to work with other Techers in classrooms and labs.

General Tips for the Caltech Essays

On the school website, Caltech explains that—perhaps surprisingly—the way they evaluate applications is “more of an art than a science.”

The admissions team reads every application and every essay to get a sense of who you are and determine whether you would be a good fit for Caltech, pointing out, “You are more than a GPA and a set of test scores!” The university’s advice is to take your time preparing the short answers and essays.

And taking the information in the previous section into consideration, we’ve come up with an additional list of general tips for responding to the Caltech Questions:

• Be authentic. Your genuine voice should shine through in these essays. Many students will be focused on trying to impress admissions officers rather than on providing honest answers, so one way to stand out is to simply be yourself!
• Be specific. Another way to write memorable essays is to provide specific, meaningful details . Don’t give the same general, generic answers that admissions officers will read over and over. The more specific you are, the more you’ll stand out.
• Be enthusiastic. One of Caltech’s key requirements is passion for science, technology, mathematics, and/or engineering. Show this excitement in your essays, and don’t be afraid to “geek out” a little. You should also demonstrate enthusiasm for learning and discovery.
• Be reflective. You might think it’s obvious how you’ll contribute at Caltech, but spell it out for admissions officers. Relate your responses to the contributions you’ll make in Caltech’s labs, classrooms, and community. Give specific examples of what you’ll do and how you’ll add value to the university.

Now that you know our general advice, let’s take a look at each of the questions you’ll be asked.

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Three experiences and activities.

Essay #1: Describe three experiences and/or activities that have helped develop your passion for a possible career in a STEM field. Use the separate spaces provided below, one for each STEM experience and/or activity.

First, note the key word “develop.”

• You should be writing about hands-on experiences with STEM, rather than passive activities like watching a video or observing an interesting lecture.
• Think of a time you applied your interest or passion in STEM.
• Consider projects, activities, research, and service. You have a broad range here, as long as you’re writing about your proactive approach to STEM.

Also keep in mind that you’re limited to only 120 words for each entry, meaning you don’t have much space to explore three experiences or activities in-depth. Your best bet is to write three short paragraphs, one for each of the events you’ve selected.

• It may be helpful to choose some activities that have been mentioned elsewhere in your application or essays. You won’t need to go too in-depth, which will save you some room.

This is a pretty straightforward question, so don’t pressure yourself to think outside the box or get too creative.

You could begin by brainstorming a list of hands-on experiences and activities you’ve had relating to STEM. Then choose your three favorites to write about.

A friendly heads-up: Don’t outsmart yourself for this question. You have three separate boxes for 120 words each, so get to the point, be concise, and choose practical, hands-on experiences. Don’t risk giving background detail or providing an activity that is passive or difficult to write about. Keep it simple.

The Life of a Techer: Collaboration

Essay #2: Much like the life of a professional scientist or engineer, the life of a “Techer” relies heavily on collaboration. Knowing this, what do you hope to explore, innovate, or create with your Caltech peers? (Your response should range between 250-400 words.)

Essentially, this is the “Why Caltech?” question. You can read our guide on how to write “Why This College” essays.

The best way to accomplish this goal is to do your research.

• Look into specific programs, extracurricular activities focused on STEM, classes, professors, and so on.
• If you feel the need to address any research opportunities, be sure to do so in extremely specific terms.
• What project are you extremely excited about? Which professor would you be working with?
• Why this project and professor in particular?
• Last, ask yourself how you can pursue these opportunities with fellow Techers.

Here’s how you should go about attacking this essay:

• Start by outlining your academic and career goals, as well as your specific area of interest in STEM.
• Then explain exactly how Caltech could help you further your interest and reach your goals.
• Discuss team dynamics and how you can leverage other students’ talents and experiences to accomplish your mission.
• Make sure you’re discussing opportunities and experiences unique to Caltech, rather than qualities that many other schools share as well.

It’s vital to be extremely enthusiastic in this essay.

Are you excited about Caltech? Excited enough to be one of just 230 students who receive this opportunity? Show it.

For example, here’s a successful outline of a Why Caltech essay:

• Your community was hit by a drought last year. It made you think about how communities in developing countries or those without infrastructure can survive such harsh climates.
• Your engineering team in high school designed a national irrigation system that adjusts the supply of water over a 300-mile mile radius. This irrigation system utilizes algorithms and radars to make its decisions.
• At Caltech, you want to work with research partners to discover how you can not only bring this irrigation system to life but also implement machine learning and AI to increase its deployment accuracy. Describe how you’ll work together.

Remember, never write about location or legacy. Southern California is a beautiful place, yes, but there are other schools in SoCal besides Caltech. Demonstrate that you took the time to research Caltech and how you fit within its community.

What Do You Do for Fun?

Essay #3: Caltech students are often known for their sense of humor and creative pranks. What do you like to do for fun? (Your response should range between 250-400 words.)

Think about your hobbies, possibly putting together another brainstorm list.

• What do you do in your spare time?
• List as many activities and interests as you can.
• Then, review the list for the most “unusual” way in which you have fun.

This doesn’t have to be something tremendously unique, just something unusual that not every teenager engages in.

• Avoid obviously common hobbies like reading, listening to music, playing video games, watching TV or movies, or playing sports (unless you play cricket, curling, or something else uncommon).
• Perhaps you collect Russian nesting dolls or build elaborate forts with your friends.
• Maybe you go on fun scavenger hunts around town or devote every Saturday to browsing yard sales for the best deals.

This isn’t a serious question and doesn’t require a serious or academic answer.

For this prompt, you do have enough room to vividly describe the unusual activity you enjoy.

Tell a story and include sensory details. If possible, you may want to see if there’s a way you can continue pursuing this unique activity at Caltech.

If not, maybe you would want to start a club of your own! Colleges love proactive students.

Irrespective of the hobby you choose, be sure to select one that has had a tangible effect on your life. Choose a hobby or pursuit that has changed you. Then, explain how it’s changed you.

• Do you train Brazilian jiujitsiu? Has it changed the way you approach competition and solve problems?
• Did you create an app for your school? What did you learn about solving a community’s problem using iOS or Android?

While it doesn’t need to be STEM-related, it should be substantive.

Contributingg to Diversity at Caltech

Essay #4: The process of discovery best advances when people from various backgrounds, experiences, and perspectives come together. How do you see yourself contributing to the diversity of Caltech’s community? (Your response should range between 250-400 words.

This question makes it clear that diversity comes in many forms. Diversity of experience, background, and thought are specifically mentioned, but you can think of any way that you might bring an interesting or unique perspective to Caltech.

• For instance, you might choose to write about your approach to solving and analyzing problems or generating ideas.
• How does your approach differ from others?
• What problems have you been able to solve, as a result, that others haven’t?
• And how could this help you contribute at Caltech?

You might also have a unique cultural or economic background, or experiences that you think will allow you to offer a fresh perspective at Caltech. There are many different ways to answer this question.

However you decide to approach the question, try to offer a supporting anecdote (a story that demonstrates the diversity you’ve mentioned) and explain how you’ll put this diverse perspective to use at Caltech.

Brainstorming the Caltech Essays

Here’s a helpful exercise that has helped a number of our students who have gone on to study at Caltech.

List three to seven books (titles and authors) that have been meaningful to you, each with a one-sentence summary of how that book has influenced you.

These don’t have to be math, science, or even academic texts.

• If you learned a valuable lesson from a fictional character or bonded with new friends over your love for a YA novel, feel free to include it here.
• You may want to include one book title that is in some way related to STEM. After all, your passion for science, math, and technology should be the focal point of your application.
• Lastly, we recommend avoiding any potentially controversial topics. You never know who will be reading your essays, and you don’t want to offend the person who holds your fate in their hands!

This exercise will help you broaden your thoughts and keep you from writing a cookie-cutter essay. Yes, it’s important to demonstrate your academic gravitas, but it’s also critical that you leverage other important aspects of your personality.

The books you’ve chosen for this list can demonstrate how you value knowledge and the interests you’re most likely to pursue once you’re in college.

Even if your interests are likely to change, this list will jog your memory and help you raise interesting points about yourself.

We mentioned above that Caltech values students who are trustworthy. The school is a close-knit, collaborative community, so honesty and integrity are vital. Here’s your opportunity to demonstrate that you possess these qualities.

• Come up with an ethical or moral dilemma to discuss.
• It doesn’t necessarily have to be a major problem, just a time you’ve had to make a challenging decision.
• Can you think of a time, possibly within your high school community, when you were faced with a tough choice, ultimately deciding to do the right thing?

Then, explain your problem-solving process, or how you arrived at a solution.

• Briefly introduce the problem and how you felt about the situation.
• Then, explain the factors you considered and the specific steps you took to arrive at a solution.

You don’t have many words to tell the story here, but try to include a few vivid details that can bring your experience to life. Show action. What did  you  do to solve the problem or come to a solution?

This is an unorthodox brainstorming exercise, but it will help you think three-dimensionally about your life and ability to create solutions. Creating solutions is, by definition, hands-on work, so this exercise is a good way to think critically about action steps you’ve taken to change your life or someone else’s.

Conclusion: Writing the Caltech Essays

Aspiring scientists and engineers from around the world dream of becoming a Techer. When applying to such a highly selective school, your essays are among your best chances to set yourself apart from the competition.

• Use the tips we’ve provided here for your four short answer questions. Be passionate, authentic, honest, and specific. Show your aptitude and enthusiasm for STEM, as well as your profound interest in Caltech.
• Don’t forget to proofread !

You might earn the opportunity to join the brilliant and innovative minds at Caltech next fall!

And if you’re interested in gaining an edge in college admissions essay writing, check out our college essay boot camp.

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Essay Scoop: How to Write CalTech Essays

Gelyna Price

Head of programs and lead admissions expert, table of contents, write caltech essays.

Stay up-to-date on the latest research and college admissions trends with our blog team.

Interested in engineering or math? Want to go to a school just for people with the same interests? CalTech, located in Pasadena, California has 24 majors, most of which are in Science or Engineering. The most popular undergraduate majors are Engineering, Computer and Information Sciences, and Physical sciences. If this school does make your list, you’ll want to know how to approach the CalTech essays properly.

About the school

CalTech has approximately 970 undergraduate students, most of whom live in one of 8 campus houses. Instead of dorms, students are assigned a house where they form friendships for social and academic support.

Another unique element of CalTech is the honor code, which states: “No member of the CalTech community shall take unfair advantage of another member.” Students take this rather seriously and understanding it is part of the admissions process.

CalTech Essays

When you apply to California Institute of Technology, you can apply using the Common App or the Coalition App. You will also write these additional college essays for CalTech:

Please list three books, along with their authors, that have been particularly meaningful to you. For each book, please include a sentence explaining their influence upon you. Please note that your response is not limited to math, science or school assigned texts.

What you read should reveal your interests and education level. Including the phrase “their influence upon you” means you need to explain how the books either changed your understanding of a topic, changed a behavior, or led you to explore something new.

You should probably include a range of genres in your list to show you have broad interests such as historical fiction, science, and mystery instead of simply a list of recent sci-fi novels. (If you haven’t read anything but a text book, get reading!)

What three experiences or activities have helped you explore your desire to study and possibly pursue a career in STEM? (200 words)

Plan a list of science, math, or engineering experiences that helped you find a passion for STEM. A great response will have experiences that have a common thread.

For example, you might have enjoyed chemistry experiments starting with a 4th grade project, a high school class chemistry activity, and a summer visit to a science museum which allowed you to explore liquid molecules.

Members of the Caltech community live, learn, and work within an Honor System with one simple guideline; “No member shall take unfair advantage of any other member of the Caltech community.” While seemingly simple, questions of ethics, honesty and integrity are sometimes puzzling. Share a difficult decision that has challenged you.What was your response, and how did you arrive to a solution? (200 words)

Question 3 asks about “ethics, honesty, and integrity” that are slightly different things. Ethics means moral behavior, honesty means not lying, cheating, or stealing, and integrity means being a good person inside. Since you only have 200 words, focus on one or two of the three terms and give clear examples that connect your decision with the principle you choose.

The question asks you to share the “challenge” of it so you should describe a transition. For example, you may have been hesitant to report a friend who copied test answers but honesty is important so you changed your hesitancy to a firm action to report him or her to the teacher.

Caltech students have long been known for their quirky sense of humor and creative pranks. Please describe an unusual way in which you have fun. (200 words)

Question 4 is a fun question you can use to reveal the lighter side of your personality, as well as a sense of appropriate humor!

In an increasingly global and interdependent society, there is a need for diversity in thought, background, and experience in science, technology, engineering and mathematics. How do you see yourself contributing to the diversity of Caltech’s community? (200 words)

The words “global and interdependent” along with “diversity” means you should think of question 5 in terms of your openness to a variety of ideas and willingness to work with others in the classroom or in the lab. In your answer, you should combine your unique personal traits or experiences along with your willingness to work as a team with others. For example, your persistence helps you to make sure group projects get completed.

Scientific exploration clearly excites you. Beyond our 3:1 student to faculty ratio and our intense focus on research opportunities, how do you believe Caltech will best fuel your intellectual curiosity and help you meet your goals? (500 words)

Because question 6 asks you specifically about California Institute of Technology, you should do some research on the school to find out what will keep you energized while you attend. Be sure to connect the ideas of fueling curiosity and meeting goals. For example, living with other students in a house would help you get homework help so you keep high grades.

You Can Do It!

Be sure to use clear, concise language, active verbs, and clear examples in your college essays. Using analogies and metaphors can help add interest to what you write.   Here’s a great primer on how to succeed with all your essay writing. The CalTech essays shouldn’t scare you away. If you need more tips on writing or how to handle these prompts yourself, reach out to the Empowerly team!

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Caltech Supplemental Essays 2023-24 – Prompts & Advice

September 14, 2022

With a 2.7% acceptance rate (yes, truly), Caltech is one of the most highly selective schools in the country. Amazingly, they have managed to operate as a test-blind institution throughout the pandemic and will continue to do so until 2025 . This means that they do not presently consider ACT or SAT results in the admissions process. As such, the Caltech admissions committee gives extra weight to the five supplemental essay prompts that they require from all applicants.

 (Want to learn more about How to Get Into Caltech? Visit our blog entitled:  How to Get Into Caltech  for all of the most recent admissions data as well as tips for gaining acceptance.)

Before we dive right in and begin examining the five required and two optional 2023-24 Caltech essays, one quick note…  the admissions committee has provided in-depth guidance for three of the five required essays , so we’ll keep our advice for those short and sweet.

Caltech Supplemental Essays – Prompt #1 (required)

Why did you choose that area of interest? (200 words)

(Note: you’ll select 1-2 areas of interest from a provided drop-down box on the application)

We all have a story of what drives us to pursue a certain academic pathway and career. How did your interest initially develop? What was the spark? How have you nurtured this passion and how has it evolved over time? If you desire to go into engineering, this is a chance to talk about everything from your childhood fascination with how things work to your participation in an award-winning robotics program at your high school. Share a compelling (and, of course, true!) narrative about how your love of your future area of study has blossomed to its present levels.

In other words, this essay should show evidence of intense hunger for knowledge that extends well outside of the classroom. How do you learn about your favorite subjects? What books have you read on the subject? Which podcasts have you listened to? What museums have you visited? What related experiences have you had?

You should also tie your passions into specific academic opportunities at Caltech including  courses ,  professors ,  hands-on research programs , or any other aspects of your desired major that appeal most to you.

Caltech Supplemental Essays – Prompts #2 & #3 (required)

At Caltech, we investigate some of the most challenging, fundamental problems in science, technology, engineering, and mathematics. Identify and describe two STEM-related experiences from your high school years, either in or out of the classroom, and tell us how and why they activated your curiosity. What about them made you want to learn more and explore further? (100-200 words for each experience)

Main note here—you won’t be writing about both experiences within the same response (phew!). Caltech provides a separate response area for each experience, so you’ll have 200 words for STEM Experience #1 and 200 words for STEM Experience #2.

Perhaps you experienced a fascinating challenge during your engineering internship, encountered a particularly thought-provoking topic during differential calculus, or relentlessly pursued an interest in black holes or topological physics. Whatever you choose—formal or informal, inside or outside the classroom—use this opportunity to share more about your chosen experience. What fascinated you about it, and why? How has it impacted you or enabled you to build particular skills?  Whether it’s falling down a Wikipedia rabbit hole about the nature of time or consuming thousands of hours of podcasts on drone capabilities, this is a chance to illustrate the ways in which you are an obsessive learner with an endless thirst for information.

The admissions reader should emerge from reading this essay with the sense that you are a sincerely curious young person with a strong intellectual drive. If that curiosity can be tied to your intended area of study at Caltech, all the better!

Caltech Essays – Prompt #4 (required)

The creativity, inventiveness, and innovation of Caltech’s students, faculty, and researchers have won  Nobel Prizes  and put  rovers on Mars . But Techers also imagine smaller scale innovations every day, from new ways to design solar cells to how to 3D print dorm decor. How have you been a creator, inventor, or innovator in your own life? (200-250 words)

Caltech knows you’re not a PhD-level researcher or a Nobel laureate, so they’re not looking for anything earth-shattering here (unless, of course, you’ve accomplished something earth-shattering—in which case, please share). Instead, they’re simply trying to understand the ways in which you bring your creative, inventive, and/or innovative qualities to your day-to-day life. Essentially, this is a fun chance to show off that side of yourself. To do so, feel free to go beyond extracurricular activities and formal experiences—maybe you perfected a solar oven design that bakes perfectly chewy chocolate chip cookies without utilizing electricity, or offered to develop a website for your local thrift shop with online shopping options. The sky is the limit here!

Caltech Supplemental Essays – Prompt #5 (required)

Caltech’s mission – to cultivate learning, discovery, and innovation for the benefit of humanity – relies on its community members embracing our Mission-Based Values ,  which include:

1. Openness and enthusiasm for having preconceptions challenged

2. Respect and appreciation for the idea that, while we are all members of the same community, the opportunities we’ve had to develop, showcase, and apply our talents have not been equal

3. Passion for the ideal that science can and should meaningfully improve the lives of others

Share what one or more of these values evokes for you. (200-400 words)

Here, Caltech provides you with three different values to choose from. Before you begin, make sure you familiarize yourself with Caltech’s full breakdown of their values . Then, choose one of the three noted above that 1) resonates most with you and 2) allows you to share more about your own personal experiences. Although you can select more than one, doing so may make it more difficult to craft a focused response, so keep that in mind as you write.

In addition, essays that wax poetic about the general importance of a chosen ideal—without connecting it to your own past experiences or future goals—will have approximately zero needle-moving value to the admissions committee. As such, rephrase each ideal as a question in order to identify the significance and depth of your associated experiences. For example, when have you had preconceptions challenged? How did you respond? When have you been confronted with the fact that yours (or your peers) opportunities have not been equal, and how did you handle it? Have you experienced how science can and should meaningfully improve the lives of others? How so?

Caltech Supplemental Essays – Prompt #6 & #7 (optional)

We know, we know … you see optional and start to wonder if we mean it. But in this section, we truly do! See these as completely optional opportunities to show us more of your personality. 

Optional. We promise.

• If there are aspects of your life or social or personal identity that you feel are not captured elsewhere in this application, please tell us about them below. (150 words)
• Did you have a hard time narrowing it down to just one interest or hobby? We understand – Caltech students like to stay busy, too – tell us about another hobby or interest! (50 words)

Caltech’s admissions committee is quite transparent about what they are and aren’t looking for, so this is one of those rare occasions when an optional essay is truly optional. As such, if there is something significant to share about your background, identity, or interests that hasn’t already been communicated elsewhere on the application, feel free to discuss it here, but do not feel compelled to respond if you’ll be grasping at straws to formulate an answer.

How important are the essays?

Overall, Caltech lists five factors as being “very important” to the admissions process. Those factors are: the rigor of your high school coursework, test scores (even though they are test blind, which is odd) recommendations, character/personal qualities, and your application essays. In fact, the essays are rated as being of greater importance than your GPA, class rank, or extracurricular activities!

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If you are interested in working with one of College Transitions’ experienced and knowledgeable essay coaches as you craft your Caltech and  Common App essays , we encourage you to  get a quote  today.

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Your chance of acceptance, your chancing factors, extracurriculars, caltech essays that worked.

Hey, guys! I'm in the process of writing my essays for Caltech and was wondering if there are any examples online of essays that actually got accepted into Caltech? I could use some inspiration and guidance from students who managed to get in!

Hello! It's great to see you're working on your Caltech essays. While there's no definitive source of "successful essays" that got accepted into Caltech specifically, there are resources that can offer guidance and inspiration.

First, I would recommend looking at Caltech's admissions page, as they often provide guidance and context for what they're looking for in their essays. This will help you understand the values and qualities they seek in their applicants, and you can then tailor your essays accordingly.

Next, you can read example essays that have gotten students into other top-tier colleges. While these essays may not be specific to Caltech, they can still give you some perspective on what successful essays look like in terms of style, structure, and content. Forums and educational websites are great places to find these examples, just remember to not plagiarize or directly mimic any of them; your essay should be a reflection of your personal experiences and personality.

In terms of content, try connecting your essay to what excites you about Caltech's specific programs, research opportunities, and community culture. Be genuine about who you are and what you can contribute to their community. Additionally, try to demonstrate your passion for STEM subjects and showcase how you've gone above and beyond in your pursuit of scientific discovery or innovation.

Lastly, don't forget to proofread and revise your essays meticulously. A well-polished essay leaves a good impression on the admissions committee and can help elevate your application.

Remember, there's no specific formula or template for successful college essays, as it's largely about telling your unique story and showcasing your personal qualities in a compelling, authentic manner. Good luck with your essays and your application to Caltech!

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Vol. CXXVII

Pasadena, CA

You Can and Should Do Better, Faculty Members - A Commentary on the Reinstated SAT/ACT Requirement for Undergraduate Admissions

Written by: A friend of the students

Editors’ note: The author requested that this piece be published anonymously, for reasons described within. Given the sensitivity of the topic and the nature of the views expressed, we determined this to be acceptable in line with the Tech’s Journalistic Principles .

Undergrads, you might have noticed in the past edition of The California Tech a small section on page 2 that the Faculty Board had passed a resolution reinstating the SAT/ACT requirement. Or in the February 27th edition, an article titled “ Faculty Petition Speaks to Broader Implications for Undergraduate Admissions ” describing a petition circulating amongst the faculty that the Tech editors report they were repeatedly denied a copy of. I would like to make public the text of the petition. You can find it in full below. (jump to petition)

I expected better from the members of the faculty who signed this petition, who not only ignored the truth of the matter while writing this petition, but repeatedly denied current students access to it. In addition to the Tech editors being denied a copy of the petition, I have been told that members of ASCIT have been repeatedly uninvited from the monthly Faculty Board meetings where discussion of this is taking place and that undergraduate student leaders’ direct lines of access to administrators and faculty members on campus have been uniformly shut off to any information about this petition. (If you don’t believe my word on this, feel free to contact the current student leaders, whom I am certain would be happy to explain their side of the story better than I can). I also find myself disappointed in the Faculty Board, whose committee to collect and present evidence on this topic attempted to find a correlation between SAT math scores and first-year (shadow) grades. Attempting to use first-year (shadow) grades when those students are told to focus on their transition to college and not worry about grades, rather than say sophomore year grades or cumulative GPA, seems misguided to say the least. Perhaps more worryingly, despite this lack of conclusive evidence, the Faculty Board passed the resolution reinstating the SAT/ACT requirement almost unanimously.

As a University whose motto is, “The Truth Shall Make You Free”, in what sense do the actions of the past few months live up to this? In what world does hiding the evidence and covering up the dialogue about current (and future) students help you, or them? Would it have been impossible for you to share your concerns with them directly as I have, instead of gossiping about them behind their backs? How does casting off entire classes of current students as effectively ’too dumb to succeed at Caltech’ encourage them to make up lost ground and perform better in your classes? So students, in the spirit of our shared motto, I believe you should have access to this petition, even though you may find the text itself and the commentary surrounding it painful to hear. You should also know that not all members of the faculty believe in the spirit behind this petition, and hopefully you will be heartened to know that many refused to sign it.

I am choosing not to publish the names of the 150+ faculty members who signed this petition for a few reasons. First, I do not want this article to be used as a personal attack on any one person who signed the petition, but rather as an inspiration for reflection on the state of our campus community. Second, public comments attached to the petition reflect that some members of the faculty only signed the petition to encourage the Faculty Board to investigate the correlation between SAT/ACT scores and academic performance at Caltech, as a request for more evidence on this topic, without buying into the rest of the discourse surrounding this. While I disagree with their decision to sign this flawed document, I do not think that publishing their names alongside those who are fully buying into the idea that current students are fundamentally un- or under-prepared for Caltech academics will be productive.

I publish this anonymously for fear that this discussion will hurt my career and threaten my current employment. For a community that prides itself on freedom of intellectual thought and objective review of the available data, it is shameful that we cannot have an open dialogue about this. Faculty members, you can and should do better. I urge you to engage with and discuss this with the undergraduate community in a meaningful way, instead of continuing to deny them a seat at the table.

The text of the petition is printed on the opposite page of this issue of the Tech.

In addition to my rebuke of the actions taken by some faculty members in the past few months, I would like to provide a critical analysis of the petition and some context that it is lacking.

First, the data from two electrical engineering courses (EE 44 and EE 55) are not representative of the entire student body, and certainly faculty members who pride themselves on their ability to carefully analyze data in their professional capacity should know better than to take a non-representative sample as proof of anything.

Second, even if you did take the data of the two electrical engineering courses to be representative of the student body as a whole, the analysis does not take into account that each year of students has had substantially different high school and core curriculum experiences. The core curriculum has undergone substantial revision between 2019 and now, and it is not inconceivable that different teaching styles and curricula for math and physics core courses could have impacted scores in EE 44 and EE 55. [I might even suggest the Faculty Board investigate how well the core curriculum has prepared students for sophomore year courses and beyond during each iteration of the past few years]. Additionally, while the current undergraduate seniors had only their final few months of high school online, and presumably took calculus and other math and physics courses in person, a substantial portion of the current undergraduate juniors, sophomores, and first-year students took calculus, trigonometry, and physics online during the COVID-19 pandemic. Numerous recent studies [1-4] have shown that students perform poorly on objective high school math standards when taking courses online compared to in person, despite their grades in those courses being comparable. I believe that the undergraduate Academics and Research Committee (ARC) went so far as to collect and present data on this very topic at last year’s Student Faculty Conference and presented this data again at a Faculty Board meeting last spring. In conversations with undergraduate student leadership in the past few months, they have lamented the fact that the Faculty Board has not only failed to take these data into account when making decisions about current and future students, but has also denied them a seat at the table where they could have brought this up directly. Members of the faculty should know better than to conclude that this change in a non-representative sample was caused by the lack of SAT/ACT requirement, when differential math and physics preparation due to a worldwide pandemic could just as easily explain the effect.

Third, the brief paragraph within the petition on the COVID-19 pandemic and its effects on academics fails to take into account the reality of the situation. More than a few students lost parents and other close family members, lost regular access to school-provided meals, and lost access to academic support and extracurricular opportunities during the pandemic. To expect them to master calculus and other math topics that are tested by the electrical engineering “basic math test” during such a tumultuous period is almost absurd. Furthermore, the SAT and ACT do not test calculus or physics topics and thus are not indicators of whether students have mastered these topics. Additionally, AP tests were administered online in a shortened format over the pandemic and the reports from both students and high school teachers from that period indicate that they were not representative of students’ true grasp of these concepts. Moreover, widespread high school grade inflation, especially during periods of online learning, makes it almost impossible for the admissions office to discern which students have actually mastered calculus and other math topics based on their transcripts. As none of these metrics can serve as appropriate measures of student learning over the pandemic, it would be worthwhile for the members of the faculty who signed this petition to take this into account when suggesting that the lack of the SAT/ACT requirement is the sole reason the admissions office is admitting “D & F students” instead of “A & B students”.

While there are many more points I could make about the contents of the petition, hopefully I have demonstrated that it is poorly thought through. The public comments attached to this petition clearly show that many members of the faculty believe that the solution to this “problem” of students un- and under-prepared for their courses is to admit “better” students in future years. What, I ask, is your plan to support the current students whom you have an obligation to teach, to the best of your ability, right now ? It is easy to point fingers at the admissions office and at students. It takes much more initiative to help the students you believe are not ready for your courses to succeed, or as an Institute, to not only notice there is a “problem” but actually help resolve it. Members of the faculty, I implore you to do better.

[1] American Economic Association, 2023. The importance of in-person schooling.

[2] Binkley 2022. Associated Press. COVID grads face college

[3] Locke et al. 2021. Learning loss in reading and math in U.S. schools due to the COVID-19 pandemic

[4] National Assessment of Educational Progress 2022

Editors’ Note on the faculty petition below: This petition was written several months ago (dated January 16) and may not reflect anyone’s current views or facts. It is provided only for context to this article. It was also written for an audience of only the President, Admissions, and other faculty — i.e., not the broader Caltech community. It has not been edited or abridged in any way, except as noted in the article.

Faculty petition

January 16, 2024

Dear faculty colleagues:

Over the past few years, faculty colleagues across campus have noticed and commented on a sharp decline in the quantitative skills of our undergraduate students. In particular, although many of our undergraduates are of the same caliber as in the past, there has been a concerning drop in preparedness at the low end of the distribution. This decline has worsened with recent changes in our admissions practices, and is particularly acute for the current sophomore class. An inordinate number of students are failing courses, honor code violations are on the rise, and requests for tutors and extensions have substantially increased. Some faculty report having to adjust grading practices, as well as course content, to the change in student population.

We fear that this decline will have disastrous consequences for our students’ training and career outcomes, for Caltech’s educational mission, and for Caltech’s reputation at large.

The goal of this letter is to initiate discussion and action on this critical and urgent matter.

Below we consider possible causes for the decline. Based on these reasons, we believe that the problem requires both immediate action as well as longer term improvement and monitoring in admissions practices.

In the immediate term, we ask the institute to:

• Reinstate the SAT/ACT as an admissions requirement for the next cycle. This should be announced in March 2024, so students can start testing in the spring, preparing for applications in the Fall.
• Form a faculty-led committee to study the effectiveness of current admissions practices on student outcomes and to make recommendations about how to improve the process. Such a longitudinal study was promised to the faculty (see Faculty Board meeting of 6/7/2021), but no such report has been released. This committee should report its findings sometime in Fall 2024 so that it can help shape next year’s admission cycle.

In the longer term, we ask the institute to:

• Establish a faculty-led standing committee whose charge is to regularly gather data on student learning outcomes and use them to evaluate and guide our admissions processes. This is important because so far our admission policies have not been informed by this essential exercise, in contrast to peer institutions like MIT.

Why do student STEM skills matter?

Many of us are committed to Caltech because of its unique place in the higher education landscape, as reflected by the “There is only one Caltech” campaign motto. We view our educational mission as recruiting, educating, motivating, and empowering the next generation of top scientific, engineering and mathematical talent. Our comparative social contribution is to provide a niche for individuals with an extreme passion and talent for these fields. We give those students a protected environment to develop their talent and passion at the highest levels of science and engineering. Then they go and establish the semiconductor industry or find a cure for AIDS. Historically, Caltech has produced one of the highest rates of future STEM PhDs and the highest rate of Nobel laureates. If we give up on the goal of educating students with this unusual intensity and talent, then we lose our raison d’etre, our unique and essential educational contribution to society.

As faculty, we also need to acknowledge the limits to what we can do. The historical greatness of our undergraduates has been largely due to them, not to the faculty. To train top-flight scientists and engineers we have to start with top-flight high school graduates. Our skill is in designing a curriculum of courses and research that challenges these students beyond their comfort zone. But we have no special skills that would bring the median high-school graduate to that level. There is nothing magical about Caltech that turns someone into a successful scientist just because they spent 4 years here. Furthermore, unprepared students struggle here even though they would have thrived at other top schools like Stanford or Harvard. This is why the STEM skills of our entering first-years continues to be crucial to Caltech’s unique educational mission.

Two examples: Student performance in EE44 and EE55

The drop in STEM skills has been observed by many faculty who teach first-year and sophomore courses.

A concrete example is provided by Ali Hajimiri, who analyzed grades in EE44 (Deterministic Analysis of Systems and Circuits). EE44 is the introductory circuits course taken by all EE sophomores, and it uses basic complex number, linear algebra, and calculus concepts. Ali has taught EE44 continuously for the past 12 years. Each year, he administers a basic math test on day 1 to get a baseline on the students’ math competency. He also administers a midterm and final exam. This fall, he reused the 2020 final exam to create a control comparison.

Consider the scatter plots below, which show the relationship between the score in the initial math Quiz 0 and the midterm exam (red dots) and final exam (blue dots). Each dot represents one student. There is a stark difference between the grades of 2020 sophomores (left plot) and 2023 sophomores (right plot). Whereas the top of the class in 2023 (green ellipse) looks similar to the entirety of the class in 2020, the class of 2023 has a sizable cluster of students (the red ellipse) that did not exist in 2020 and who enter the class with weak math foundations and in turn performed poorly in the course.

Another data set is from the EE55 class (Mathematics of EE) taught in alternative years by Victoria Kostina. This data compares the final exam scores of the students taking the exam in 2021 versus. those taking it in the fall of 2023. It again shows a noticeable drop in the performance of the class.

Although this is data from only two courses, it is consistent with the classroom experiences of many other faculty at Caltech. If, as we suspect, the data from other classes at Caltech match these observations, then we are facing a major challenge to our educational missions that requires urgent action. First, a substantial fraction of the current Caltech student population is not well matched to our educational program and not served well as a result. Second, the experience of all students is impacted, for example, by lowering the level of our course offerings. Third, our reputation, and thus our long-term ability to attract Caltech-caliber, students are at risk. Eventually, this could affect recruitment of graduate students and faculty as well.

Decline of Caltech’s performance in prestigious student competitions

Historically, our students have had an outsized presence at the Putnam math competition, with multiple Putnam Fellows (top 6 finishers), and topping the competition more than any school other than Harvard and MIT. But since 2010 there has been a steady decline in Caltech’s showing. Over the past few years, Caltech’s performance fell precipitously: since 2019 we have had zero students in the top 100. This is distressing for a school that touts itself on being a destination for top STEM talent. MIT, on the other hand, is sweeping the top spots.

A similar decline relative to other universities has been seen in coding competitions, such as the ACM-ICPC, where in the past few years Caltech has even failed to qualify for the international competition (before that it was a contender for the top spots).

While we are not suggesting all Caltech students should be top math or coding competitors, our performance in these competitions provides an informative signal about the quality of our student population, and gives us visibility to help attract top high school talent.

Potential causes for the decline in student STEM skills

Several hypothetical causes for the drop have been proposed. We hope that the faculty-led committee that we propose will carry out an immediate quantitative and systematic evaluation of these issues to inform our admission practices.

Here we provide an initial discussion of two of these causes.

Is it fully attributable to COVID? This explanation fails on two counts. First, the top half of our student population performs as well as the pre-pandemic students. Given our large pool of applicants (~16,000), and low admission rate (~2% for non-athletes), it defies reason to think that we cannot find more A & B students and have been forced to admit D & F students to fill the class. More likely, our admissions process is failing to spot the D & F students. Second, the COVID hypothesis does not explain the differences in top achievers across schools. COVID or not, top Putnam performers still exist. They are just not at Caltech.

Is it caused by changes in admissions practices? Our admission criteria have changed in the past few years and thus deserve scrutiny. Starting with the class entering in 2021 (today’s juniors), as a response to Covid, we stopped requiring applicants to take the SAT/ACT test, which in the past was used as an indicator of math and verbal proficiency. Furthermore, we introduced a number of non-cognitive criteria alongside academic merit. In the process, we seem to have lost focus on the need to choose applicants who have acquired in high-school the skills needed to thrive in Caltech’s rigorous and fast-paced academic training.

Why bring back the SAT/ACT as soon as possible?

The case for using the SAT/ACT in our admission process is that it provides a necessary, but not sufficient, signal for success in our challenging educational program. These test scores are unlikely to be predictive of outcome differences at Caltech among students who perform above a high-threshold, as has been the case for our historical student population. However, based on years of experience in the classroom and the lab, we believe students who are not able to score highly on the math sections of those tests are not likely to perform well at Caltech.

Consistent with this view, in March 2022, MIT brought back the SAT/ACT as a requirement [ ref1 , ref2 , ref3 ]. The report from the MIT dean of admissions is well sourced, and — given the similarity of MIT’s mission to our own — makes for useful reading. Here are some relevant quotes:

• “Our research has shown that, in most cases, we cannot reliably predict students will do well at MIT unless we consider standardized test results alongside grades, coursework, and other factors. These findings are statistically robust and stable over time, and hold when you control for socioeconomic factors and look across demographic groups. And the math component of the testing turns out to be most important.”
• “It turns out the shortest path for many students to demonstrate sufficient preparation — particularly for students with less access to educational capital — is through the SAT/ACT, because most students can study for these exams using free tools at Khan Academy, but they (usually) can’t force their high school to offer advanced calculus courses, for example. So, the SAT/ACT can actually open the door to MIT for these students, too.”
• “[T]here is no pathway through MIT that does not include a rigorous foundation in mathematics, mediated by many quantitative exams along the way. So, in a way, it is not surprising that the SAT/ACT math exams are predictive of success at MIT; it would be more surprising if they weren’t.”

Similar results have been found by several recent studies at other institutions [ ref4 , ref5 , ref6 , ref7 ]. For example, a study by Opportunity Insights looked at admissions records and student outcomes at multiple college Ivy-Plus colleges between 2017 and 2022 and found that “[e]ven among otherwise similar students with the same high school grades, we find that SAT and ACT scores have substantial predictive power for academic success in college,” even after controlling for high school grades. As shown in the figure below, “[s]tudents opting to not submit an SAT/ACT score achieve relatively lower college GPAs.” A related earlier study by Opportunity Insights also found that SAT/ACT scores are substantially more predictive than high-school grades of the likelihood of attending an elite graduate school or working at a prestigious firm.

In stark contrast, three months after the MIT announcement, Caltech announced that we would extend the moratorium by three years. In fact, the press release from admissions making this announcement stated: “…standardized test scores have little to no power in predicting students’ performance in the first-term mathematics and physics classes that first-year students must take as part of Caltech’s core curriculum. Further, the predictive power of standardized test scores appears to dissipate as students progress through the first-year core curriculum.” This claim refers to an internal report that has never been released to the faculty for evaluation and discussion.

In fact, the predictive value of the SAT on Caltech student performance had been studied in the 1990s by Dave Rutledge and colleagues. They found that students with a Math score below 700 have a high chance (larger than 50%) of dropping out. In the wake of that study, the admissions office set 700 as the minimum Math score for admissions.

As recently as 2019, all of our admitted students had an SAT Math score above 700, with the 25/75 percentiles at 790/800. In fact, historically, Caltech students had the highest SAT scores of any university. Now our admission process dismisses the SAT as a useless metric. One of the tenets of empiricism is that extraordinary claims require extraordinary evidence to support them. Given that this claim goes against a practice that has served Caltech and MIT well for decades, that MIT recently looked carefully into this issue and brought back the SAT/ACT, that recent studies have found that SAT/ACT are predictive of student outcomes at Ivy-Plus colleges, that the 1990s Rutledge study found similar conclusions at Caltech, and that the report cited by the Admissions Committee Chair has not been shared with the faculty for evaluation, we are skeptical of the claim that it is not a useful metric on admissions.