If you are researching Princeton ACT score requirements, here is the direct answer: the average ACT score at Princeton is 35, the 25th percentile is 34, and the acceptance rate is 4.6%. Those three numbers tell you everything you need to know about what you are up against. Princeton is not just selective. It is among the most selective universities in the world, and your ACT score needs to reflect that level of preparation before you apply.

Here is the full picture.

Princeton ACT Score Requirements at a Glance

What ACT Score Do You Need for Princeton?

The Princeton ACT score data is among the tightest ranges of any university in the country. Here is what it means in practice:

• 25th percentile: 34 (below this range makes admission extremely unlikely)
• Average: 35 (right at the competitive midpoint for admitted students)
• 75th percentile: 35 to 36 (above this range puts you in a genuinely strong position)

The range between the 25th and 75th percentile at Princeton is just one point. That tells you something important: the vast majority of admitted students are clustered at 34 and 35. A 33 puts you below the floor of what Princeton typically admits. A 36 is the ceiling of the test and gives your academic profile maximum strength.

What ACT Score Is Competitive for Princeton?

Princeton’s 4.6% acceptance rate means roughly 5 out of every 100 applicants are admitted. That is not a school where meeting the average makes you a competitive candidate. Here is how to read your score honestly in the context of Princeton admissions.

Score of 33 or below: You are below the 25th percentile. Princeton does not publish a minimum ACT score but the data is clear. A score below 34 puts you in a very difficult position regardless of the strength of the rest of your application. The academic filter at Princeton is real and it is applied early in the review process.

Score of 34: You are at the 25th percentile floor. Your ACT score clears the academic threshold but it means 75% of admitted students scored higher than you. Every other part of your application needs to be genuinely exceptional to compete at this level.

Score of 35: You are at the average and above the majority of admitted students. A 35 is a strong score for Princeton. It removes any concern about academic readiness and lets the rest of your application carry weight in the review process.

Score of 36: A perfect score. It is the highest possible ACT composite and it makes your test score an unambiguous asset. At Princeton, a 36 does not guarantee admission, but it eliminates the test score as any kind of limiting factor in your file.

Why a High ACT Score Matters More at Princeton Than Almost Anywhere Else

With 4.6% of applicants admitted, Princeton’s initial review process is built around identifying students who clear every academic threshold before anything else is considered. A strong ACT score is the first filter. It does not win you admission. But a weak score ends your application earlier in the process than any other single factor.

Here is what a strong ACT score does in a Princeton application:

• It establishes academic credibility in a pool where every other applicant also has near-perfect grades
• It gives admissions officers confidence that your GPA reflects genuine academic rigor and not grade inflation
• It clears the first review threshold so your essays, recommendations, and extracurriculars can be evaluated on their own merits
• It strengthens the overall academic picture of your application at a school that receives tens of thousands of applications from students with equally impressive records

None of that means a 35 or 36 gets you in. Princeton’s holistic review evaluates every dimension of your application. But without a score in the 34 to 36 range, those other dimensions rarely get the full consideration they deserve.

How GPA Interacts With Your ACT Score at Princeton

The average GPA for admitted Princeton students is 3.95, which is essentially a straight-A average with a strong lineup of AP and IB courses. Princeton expects students who have challenged themselves with the most rigorous coursework available and excelled consistently across all four years of high school.

If your GPA is at or below 3.95, your ACT score becomes even more critical. A student with a 3.85 GPA and a 36 ACT is in a stronger position than a student with a 3.85 GPA and a 34 ACT. Both students face a difficult path at a 4.6% acceptance rate, but the test score is one of the few variables that can actively compensate for any gap in the academic record.

Princeton ACT Score Compared to Similar Schools

To put Princeton’s ACT requirements in context, here is how it compares to schools at a similar and nearby level of selectivity:

Same level as Princeton:

• Yale University, ACT average 34
• Tufts University, ACT average 34
• Boston College, ACT average 34
• University of Michigan, ACT average 33
• Emory University, ACT average 33

Schools where a Princeton-level score makes you a strong candidate:

• University of Pennsylvania, ACT average 35
• Brown University, ACT average 35
• Massachusetts Institute of Technology, ACT average 35

If you are scoring 34 or above, you are within the competitive range at Princeton and genuinely strong at every school at a similar selectivity level. A 35 or 36 puts you in contention at the most selective universities in the country.

What Else Princeton Evaluates Beyond Your ACT Score

Princeton’s holistic admissions process means your ACT score is the beginning of the evaluation, not the end of it. Students who are admitted to Princeton with scores in the 34 to 36 range also present:

• A rigorous course record of AP, IB, and honors classes with near-perfect grades throughout high school
• Extracurricular depth with genuine leadership, sustained commitment, and meaningful impact in one or two areas rather than a long list of surface-level activities
• Personal essays that are specific, authentic, and reveal something about who you are that the rest of your application does not already show
• Recommendations from teachers and counselors who can speak to your intellectual curiosity, character, and potential with real specificity and conviction

A 36 ACT with a mediocre application does not get you into Princeton. A 35 ACT with a genuinely exceptional application gives you a real chance. The test score opens the door. Everything else determines whether you walk through it.

How to Hit Your Princeton ACT Target

Getting to 34 or above requires preparation that goes well beyond reviewing content you already know. The students who reach this score range share a consistent approach:

• They started with a diagnostic baseline that showed them precisely which sections and question types were costing them points
• They focused the majority of their preparation on their weakest areas rather than the sections they were already strong in
• They practiced with full timed tests to build the pacing and automaticity that prevents avoidable errors under real testing conditions
• They reviewed every wrong answer before moving on and used that analysis to target the next session specifically
• They retook the test when their preparation showed measurable improvement, not just because more time had passed

At the 34 to 36 range, the gains come from precision. A student moving from 31 to 34 needs to close specific content gaps. A student moving from 34 to 35 needs to eliminate the careless errors and timing inefficiencies that are the difference between a correct and incorrect answer on the hardest questions. Both types of improvement require knowing exactly where the points are going.

How ScoreSmart Can Help You Hit Your Princeton ACT Target

If Princeton is on your list and your ACT score is not at 34 or above yet, ScoreSmart’s ACT test prep is built around exactly the kind of precision preparation that moves scores into the competitive range for the most selective schools in the country. Rather than giving you a generic curriculum, ScoreSmart shows you precisely which sections and question types are costing you points and builds your preparation around closing those specific gaps.

Whether your goal is to push from 31 to 34 to clear Princeton’s academic threshold or to move from 34 to 35 to strengthen a file that is already competitive, ScoreSmart gives you the performance analytics to improve your ACT score with a clear, targeted path before your application deadline.

If you are also preparing for the SAT alongside the ACT, ScoreSmart’s SAT test prep applies the same precision framework to the SAT, giving you a clear picture of where your score stands and the specific steps to improve your SAT score into the range that Princeton and similarly selective schools expect.

The students who get into Princeton do not leave their test scores to chance. Neither should your preparation.

The Bottom Line

Here is what every Princeton applicant needs to know about ACT score requirements:

• The average ACT score for admitted students is 35, with a 25th percentile of 34 and a 75th percentile of 35 to 36
• A score of 34 is the practical floor. Anything below that puts you in an extremely difficult position at a school that admits 4.6% of applicants
• A score of 35 puts you at the average and removes any concern about academic readiness in the review process
• A score of 36 makes your ACT score an unambiguous asset and eliminates the test as any limiting factor in your file
• Princeton’s holistic review means a strong test score opens the door but does not guarantee admission. Every other dimension of your application needs to be equally exceptional
• A strong ACT score can offset a GPA that falls slightly below the 3.95 average, making preparation one of the highest-leverage investments before applying

A 34 clears the threshold. A 35 puts you in the conversation. A 36 removes the question entirely. Get there with the right preparation and your Princeton application stands on the strongest possible academic foundation.