Writing the supplemental “Why this major” essay sounds like a cakewalk for approximately 4% of high school seniors, those lucky few who’ve known their purpose since kindergarten. For most, it feels more like a desperate stab at fortune-telling. How should anyone know what major they’ll choose at a school they haven’t yet been invited to attend? (Let alone what career they’d choose after graduating from said unknown institution.) In fact, if these students could flash forward two years, they’d see that a large number of sophomores will still be considering the question a week before they must pick their major.
The reality is, choosing a major often involves a lot more on-site research: visiting the offices of professors, talking to college advisors, testing out intro classes, and so on. The “Why this major” essay, on the other hand, is rarely a commitment to a particular major. Rather, it’s a way for admissions officers to determine a) what subject(s) the student is interested in, b) how they’ve pursued this interest already, and c) how they would take advantage of the college’s resources while further developing in their field. Like the why this college essay, the why this major essay ultimately shows admissions officers if the student will be a good fit at their college. Yet here the scope of the essay is more focused. This makes the essay easier to tackle, so long as the student has done their research.
What Changed for 2026-27
If you are working from a guide published even a year ago, check the prompt before you draft. Purdue is the clearest case. Its why-this-major question used to cap responses at 100 words, and for years it was the standard example of how tight this genre can get. For 2026-27 it allows 250 words and asks a second question inside the first: “Briefly discuss your reasons for choosing your major and your interest in studying at this campus location (Indianapolis or West Lafayette).” Purdue absorbed the Indianapolis campus in 2024, and applicants now select one. A response built for the old 100-word version answers half of what is being asked.
Rice rewrote its version too, and the new wording is more demanding than it looks: “Please explain what draws you to the academic areas you selected above and how you hope to explore them at Rice University.” That second clause turns a 150-word personal statement into a 150-word personal statement plus school-specific research.
Movement runs the other direction as well. Georgia Tech asked a why-major question for years and does not ask one this cycle. Princeton left its B.S.E. prompt untouched, so drafting you started last summer still applies there. The takeaway holds in every case: open the application itself, read the question in front of you, and write to that wording rather than to the version you found on a blog.
Researching the “Why This Major” Essay
Even students who have already settled on an intended major need to do some preliminary research. It may sound obvious, but you’d be surprised to hear how many students dash off a why this major essay without ever visiting the college website. Most college websites will be neatly laid out, with an “Academics” page linking to the various majors and minors on offer.
For undecided students, this list of majors will spark ideas. Often, subjects not offered at the high school level simply aren’t on a high schooler’s radar. Less typical liberal arts majors might include Food Studies, Fashion, and Neuroscience. A larger university may have a whole school dedicated to Engineering, with engineering majors ranging from Biomedical Engineering to Civil Engineering. (Students applying to a school like this will want to read up on additional guides, such as our look at the top undergraduate engineering programs.)
Furthermore, students may find that a particular college combines several of their interests into one major. A major in Sustainable Development will require courses on environmental science, economics, and architecture. Some colleges even offer an independent study option, allowing students to combine several disciplines of their choice as they work on a specific senior project.
Once the student has narrowed down their interests to around one to three majors, they should take notes on any aspects of the programs that appeal to them. These can include the curriculum and courses offered, research taking place in the department, study abroad options, labs, and the like. Department websites also provide insight into current and previous students’ thesis work. These notes will make drafting the why this major essay a lot easier, and will provide real evidence that the student is sincerely interested in the program.
Structuring the “Why This Major” Essay, Part A
Structurally, the “Why this major?” essay hinges on two complementary parts. These two halves don’t need to be equally weighted in words. Yet they are equally valuable in forming a cohesive argument.
In part A, students describe their history with the specific subject they’ve chosen. Anecdotes provide an easy way in. A why this major engineering essay may begin with a student describing the time they fixed the science class aquarium by restructuring valves connecting to the water tank.
Next, the student should show how this interest turned into a full-fledged passion. Examples here could include specific units in high school classes, books they’ve read, internships, and so on. Try to choose moments and details that together shape a journey.
Structuring the “Why This Major” Essay, Part B
This second part of the “Why this major?” essay is all about the future. The student must link their developed interest to their chosen major. Then, returning to their research notes, the student will show why the school they’re applying to will be unique in providing a relevant and resourceful education in that arena. Though most aspects of a program are worth mentioning, it’s best to avoid naming specific professors. Faculty can vary annually, and even tenured professors go on sabbatical.
Program names deserve the same caution. Princeton, to take one example, retired its undergraduate certificates in favor of minors beginning with the Class of 2026, so an applicant who writes about earning a “certificate” in sustainable energy is describing a credential the university no longer awards. Cite the thing, not the label you saw in an older essay example.
A natural final step in Part B involves describing how the chosen major will lead to the student’s desired career. It’s normal for students to feel a bit baffled here. But remember, this essay is not a promise. Rather, talking about potential career paths will demonstrate that the student has some awareness and practical knowledge of the field, as well as some idealism about what they might accomplish in it. Look again at the department website for articles and links to alumni news for inspiration.
Key Tips
Make it personal, and passionate. No matter what major a student chooses, admissions officers will be impressed by a student who has taken their education into their own hands in order to pursue their interest to its fullest.
Focus in on specificity. Admissions officers will remember a student interested in mutations in indigenous tropical plants, though they may forget a student who’s simply interested in botany. Detail will also make the essay more articulate.
Common Mistakes and Lingering Questions
As mentioned above, not doing the research before writing a “Why this major?” essay can lead to serious mistakes. Imagine submitting an essay about why you intend to major in International Politics, only to learn that the college’s major is called Global Politics and Economics. Here are some other common mistakes:
1) Not committing fully to any idea. Students who shy away from definitively selecting a major may do so out of a sense of honesty. Perhaps they don’t feel it’s right to wax on about Medieval Studies when they’re also interested in Historical Preservation. While trying to give both subjects a fair chance, the student can come across as only lukewarm for both. Colleges may pass over an applicant they see as apathetic. (Plus, colleges see students’ evolution as being in their best interest, and won’t hold it against you if you change your mind.) So, throw yourself fully into one major, or both, just make sure the excitement comes through. And consider mentioning how your second or third interest may become your minor.
2) Parroting the website. Admissions officers know what their website says. That’s their job. Students who find themselves copying or paraphrasing the website can adapt this information to themselves by answering the question, how would I take advantage of this particular feature?
3) Picking the wrong major. Students may feel pressured to pick a major that is perceived to be lucrative, or one that is less popular because they believe it gives them a statistically higher chance of getting accepted. While an applicant’s desired field of study is weighed in the admission process, attempting to “game the system” very rarely ends in success. Ultimately, choosing a major that aligns with one’s interests and accomplishments is almost always the way to go. (For more on this question, check out Should I Declare a Major on My College Application?)
Sample “Why This Major” Prompts for 2026-27
While the Common App prompts ask for fairly lengthy responses, the why this major essay works to complement the main essay, and can be pretty short. Here is what several schools are asking this cycle:
| School | 2026-27 Prompt | Limit |
|---|---|---|
| Rice | Please explain what draws you to the academic areas you selected above and how you hope to explore them at Rice University. | 150 words |
| Purdue | Briefly discuss your reasons for choosing your major and your interest in studying at this campus location (Indianapolis or West Lafayette). | 250 words |
| Princeton (B.S.E.) | Please describe why you are interested in studying engineering at Princeton. Include any of your experiences in or exposure to engineering, and how you think the programs offered at the University suit your particular interests. | 250 words |
| NC State | Explain why you selected the first choice academic program above and why you are interested in studying this at NC State. | 250 words |
The 100-word tier that Purdue used to anchor has thinned out, and 150 and 250 words are now the common shapes. The distinction is worth planning around. At 150 words, you get a cursory nod to each eventful moment that led you to your subject, and then one specific thing you want to do at that school. At 250 words, you can sharpen each experience with detail, and you have room to answer a two-part question, which is exactly what Purdue and NC State are now asking.
“Why This Major” Essay Example
Let’s see how one engineering student answered both Princeton’s and Purdue’s prompts. Both now allow 250 words, so this is no longer a matter of condensing one essay into the other. You’ll notice the student reuses the same raw material, then rebuilds it around a different question. Purdue, unlike Princeton, requires a campus.
Why This Major Essay Engineering: Princeton
I read Zen and the Art of Motorcycle Maintenance by Robert Pirsig while learning to drive. Afterward, I hoped my mom’s Volvo would break down so I could put the engine back together, as I had with a lawn mower. I love rebuilding things to understand each part. In Electronics, I wrote code to make a robot move, yet was left dissatisfied.
I’d begun to see how our climate crisis is caused by greenhouse gases, a byproduct of technology. I felt deceived by misconceived notions of “progress,” by cars and engines. Only when building an Arduino-based automated watering system to measure moisture in our school garden did I realize how technology might fix our mistakes. A complex watering system might reforest our planet, though it would be an immense undertaking. As Pirsig wrote: “Steel can be any shape you want if you are skilled enough, and any shape but the one you want if you are not.”
I wish to major in Electrical and Computer Engineering at Princeton University to develop the skills necessary to design technologies that will restore our planet’s balance. I’m inspired by the laser-based sensing drone developed by Princeton researchers, which can pinpoint greenhouse gas leaks. Through the Andlinger Center’s minor in Sustainable Energy, I would learn about remote methane sensors using chirped laser dispersion spectroscopy, and I plan to build an independent project around vapor isotope analyzers. After obtaining my B.S.E., I hope to improve the water cycles in urban environments.
Why This Major Essay Engineering: Purdue
While building an Arduino-based automated watering system for my school garden, I stopped thinking of environmental damage as strictly a moral failure. Six weeks of measuring soil moisture at four depths convinced me it is also a design failure, and design failures can be fixed.
That is why I am applying to Multidisciplinary Engineering with a Humanitarian Engineering concentration. The problem I care about, urban water cycles that no longer hold water, sits between civil, environmental, and electrical engineering. Purdue is one of the few universities that will let an undergraduate build a plan of study across all three rather than pick one and minor in regret.
West Lafayette is where I want to do that work. Through EPICS, I could put a version of my watering system in front of people who would actually use it and be told what I got wrong, which is the part my garden project never had. The campus also sits inside working farmland, so the questions I want to chase are a bike ride away. I considered Indianapolis, and for a student aiming at municipal water policy it may well be the better classroom. My questions are about what happens to water before it reaches the city.
Eventually I want to build vapor isotope analyzers cheap enough that a mid-sized city could run a hundred of them. That is an instrumentation problem, a funding problem, and a persuasion problem. Purdue strikes me as comfortable with all three.
Notice what the student did not do. The Purdue response does not recycle the Pirsig material, because Purdue did not ask for an origin story in the same way, and 250 words spent twice on the same anecdote would waste the second essay. The campus paragraph also does real work: it names what West Lafayette offers, and it says out loud why Indianapolis was the wrong fit for this particular set of questions. A reader finishes it knowing the choice was made rather than defaulted into.
Why This Major Essay: Additional Resources
Looking for advice on other aspects of the college essay writing process? You may also find the following blogs to be of interest:
- How to Write the Overcoming Challenges Essay
- How to Approach the 2026-27 Common App Essay Prompts
- “Why This College?” Essay Examples
And if you’d like a second reader on these essays, our essay coaches work with students on exactly this genre throughout the fall.
