Stony Brook SAT Scores, GPA, and ACT (2026)

Stony Brook University is a public university in Stony Brook, NY, with 18,101 undergraduates, and Stony Brook SAT scores run higher than its 49.0% acceptance rate might suggest. The middle 50 of admitted students scored between 1330 and 1500 in the 2024 to 2025 cycle, with an average of 1419. So while nearly 1 out of 2 applicants gets in, the students who enroll bring scores you would expect at far more selective schools. Put the acceptance rate in applicant terms: out of every 100 people who apply, about 49 get an offer. That sounds forgiving. But the half who scored above 1419 filled most of those seats, so the real contest happens inside the score range, not at the door.

The section split tells you where the bar sits. Math runs 680 to 770 in the middle 50, while Reading and Writing runs 650 to 730. That 30 to 40 point gap toward math reflects the applicant pool at a large public research campus on Long Island, where programs that lean on math draw heavy interest. The ACT tells the same story on a different scale, with a middle 50 of 29 to 33. Testing is optional at Stony Brook in the most recent federal data, but a score in this range is one of the clearest signals you can send.

Read your score against the 1330 to 1500 middle 50. Below 1330 puts you in the bottom quarter of admitted students, which means the rest of your application has to carry more weight at a school admitting 49.0% of applicants. Inside the range, you are a typical admit on scores, and grades and coursework decide the rest. Above 1500 puts you in the top quarter, a real advantage, because only 1 in 4 admitted students cleared that line.

The sections are not symmetric. Math sets the higher bar: 680 at the 25th percentile versus 650 for Reading and Writing, and 770 at the 75th versus 730. If the program you want leans on math, expect your Math score to face the tougher comparison. A 700 Math is barely above the 25th percentile here, while a 700 in Reading and Writing sits comfortably in the middle of its range. Same number, very different meaning. Know which section is doing the work in your composite before you decide where to spend study hours.

Admitted students at Stony Brook typically present an unweighted GPA around 3.6 to 3.9. That number matters less on its own than where it came from. A 3.7 built on AP and honors coursework reads stronger than a 3.9 built on the lightest schedule available, because admissions readers weigh the rigor of your transcript as much as the grades on it. They are asking a simple question: did you take the hardest classes your school offered, and did you hold up? Two students with the same GPA can get very different reads depending on that answer.

If your GPA sits near the lower edge of that band, a strong SAT is the fastest offset. Your transcript took 3 years to build and cannot change now. A score at or above 1419, the average at Stony Brook, can be built in a few months and gives readers a second data point that argues in your favor. It says the grades undersell you, and it says it in a number the admissions office already trusts.

Set 2 targets. Scoring at or above 1330 keeps you in range: that is the 25th percentile, the floor that 3 out of 4 admitted students cleared. Scoring at or above 1500 puts you in the top quarter, which is where a test score starts actively pulling for you. Per section, that means 650 and up in Reading and Writing and 680 and up in Math to stay in range, with 730 and 770 as the marks that put each section in the top quarter.

The optional testing policy changes your strategy, not your preparation. It hands you a choice: submit a score that helps or hold back one that does not. That choice only exists if you have a score worth weighing, so prepare as if you will submit, then decide once you see your number against 1330 and 1500. Work backward from where you stand today. Our score plans map out how many points a given weekly schedule typically buys. Start by taking a diagnostic this week so you know your exact gap to 1330, then build your study plan around closing it.