The Program in Mathematics for Young Scientists (PROMYS) is a highly regarded, six-week summer mathematics program for strongly motivated high school students.Held on the campus of Boston University, PROMYS immerses participants in the creative world of pure mathematics, meaning that rather than emphasizing memorized formulas or speed-based competition training, the program asks students to explore fundamental mathematical ideas, formulate conjectures, and justify their reasoning through rigorous proofs.
Each summer, PROMYS admits approximately 80 high school students, including about 60 first-year students and 20 returning students. About 25 undergraduate counselors, many of them PROMYS alumni, also serve as mentors. PROMYS does not publish an official acceptance rate, but according to some online sources, this program is a highly-selective, with an estimated acceptance rate around 10%.
For students applying to highly selective colleges, participation in PROMYS can serve as strong evidence of unusual mathematical depth, persistence, and intellectual vitality.
Founded in 1989 by Glenn Stevens, Marjory Baruch, David Fried, and Steve Rosenberg, PROMYS was built around the belief that students learn mathematics best by doing mathematics. The experience is designed to mirror the creative habits of professional mathematicians: experimenting with examples, noticing patterns, making conjectures, testing ideas, and refining proofs.
Structure and Curriculum:
Beyond its main summer program for high school students, PROMYS also runs programs for secondary school teachers and a free outreach program for Massachusetts students, reflecting its broader mission to expand access to advanced mathematics.
PROMYS is elite. It’s often grouped with programs that have competitive admissions processes such as the Ross Mathematics Program, Canada/USA Mathcamp, and Stanford’s SUMaC as one of the strongest summer options for students deeply interested in mathematics.
PROMYS publishes unusually detailed alumni-outcome data, which show that program alumni have attended more than 160 undergraduate colleges and universities, with over half attending Harvard University, MIT, Princeton, Stanford, Yale, UC Berkeley, or Caltech. The same outcomes page states that approximately 60% of alumni major or double major in mathematics, while many others pursue computer science, engineering, or physics. At least 75% attend graduate school, and approximately 50% earn doctorates. PROMYS selects top-echelon students, and helps to guide a motivated student’s mathematic interests as they continue in high school.
PROMYS also reports that 205 alumni are currently professors, including 129 professors of mathematics, and that alumni have earned distinctions including a MacArthur Fellowship, Sloan Research Fellowships, NSF Graduate Research Fellowships, Putnam Fellow honors, IMO medals, and USAMO wins.
PROMYS does not publish an official acceptance rate. However, the program does disclose that it admits approximately 80 high school students each summer, including about 60 first-year students and 20 returning students. Because the number of first-year seats is so small, PROMYS is widely considered a highly selective summer math program.
Third-party sources commonly estimate the acceptance rate at roughly 10% to 13%, while some informal applicant discussions suggest even lower numbers. Since these estimates are not official, students should treat them as approximations.
PROMYS is selective because it draws from a self-selected pool of students who are already deeply interested in advanced mathematics. The application is centered on challenging problems that ask students to reason carefully, write proofs, and show persistence over time. Admission to PROMYS can demonstrate serious mathematical ability and motivation.
Students are eligible to apply to PROMYS if they meet three basic criteria by the first day of the program:
PROMYS does not require students to be rising seniors; in fact, the program says most students attend after their sophomore or junior year of high school, though students may also attend after completing 12th grade or a gap year as long as they have not started college and do not turn 19 before the program begins.
PROMYS says students do not need to have extensive experience in advanced mathematics or competitions before applying. Instead, the program looks for students with the “desire and ability to think deeply about fundamental mathematical principles.” A good applicant is someone who enjoys wrestling with hard problems, can explain their reasoning clearly, and is willing to spend sustained time exploring Number Theory, writing proofs, and collaborating with other mathematically curious students.
International students are welcome to apply to PROMYS, although the program notes that space is limited and that most PROMYS participants are from the United States. PROMYS has welcomed students and/or counselors from nearly 50 countries. International applicants do not need TOEFL scores, but they must have enough English proficiency to participate fully in lectures, discussions, and problem sets, all of which are conducted in English. Because PROMYS students are not enrolled in college courses, international participants come on a visitor’s visa rather than a student F-1 visa.
Students who ordinarily live outside the United States may also want to review related PROMYS pathways and programs, including PROMYS Europe, PROMYS Italia, and PROMYS India, which is connected to the Indian Institutes of Science Education and Research. Students may not apply to more than one PROMYS program in the same summer.
The PROMYS application is built around mathematical reasoning rather than standardized test scores. Applicants submit their materials through Submittable, where they can create an account, save their progress, and upload required documents before the final deadline. For the 2026 application cycle, PROMYS lists four required components: problem set solutions, a letter of recommendation, a high school transcript, and an online application form with short answers. PROMYS also notes a strict AI policy: applicants may not use AI tools or internet answers for the problem set, and the program may interview applicants to confirm the originality of their work.
PROMYS does not use rolling admissions. Students apply by a fixed deadline, teacher recommendations are due shortly afterward, and admissions decisions are released later in the spring. Students should generally begin working on the PROMYS application as soon as it opens in January, especially because the problem set is intentionally challenging and may take weeks of sustained work.
Given previous years’ timelines, prospective applicants should expect the following milestones:
The most important part of the PROMYS application is the problem set. PROMYS states that applicants do not necessarily need to answer every problem, but the problem set is the most significant part of the review because it shows how creatively, enthusiastically, and persistently a student reasons through difficult mathematical ideas.
PROMYS students spend six weeks immersed in proof-based mathematics, with Number Theory serving as the core subject for the program. Each weekday begins with a Number Theory lecture from 9:00 to 10:30 a.m. After the lecture, students receive a daily problem set and meet with their counselor to get feedback on the previous day’s work. First-year program participants spend most of their time working through these Number Theory problems in a richly supportive environment, while returning students may also take advanced seminars, attend guest lectures, pursue original research projects, and, in some cases, students present their work to the larger PROMYS community.
PROMYS is not structured like RSI, where students typically move into independent research in the lab after an initial lecture period. Instead, the core experience is mathematical discovery through mathematical problem solving. Students work independently and collaboratively to design numerical experiments, identify patterns, ask good and creative questions, make and test conjectures, and justify those ideas through proofs. PROMYS says students have about 1.5 to 3.5 hours of scheduled class time each weekday, but much of the real work happens during unscheduled time, including evenings and weekends.
The main subject area for first-year students is Number Theory, the study of integers. Students encounter ideas connected to primes, congruences, modular arithmetic, and other foundational structures in pure mathematics. PROMYS explains that the morning lectures and daily problem sets are rooted in Number Theory, but students are also exposed to a wider range of mathematical knowledge through advanced seminars, mini-courses, lectures, research, and informal discussions.
A typical day at PROMYS is intentionally less scheduled than a traditional school day. After the morning lecture and counselor meeting, students decide how to use much of their remaining time. Some work in dorms, while others work in the library, empty classrooms, or outdoor campus spaces. The expectation is that students will spend most of the day, and sometimes part of the night, engaged in rigorous mathematical activity: thinking about mathematics, refining proofs, testing examples, and talking through ideas with other students.
By the end of the program, first-year students will not necessarily have completed a formal research paper, lab project, or exploration labs experience in the RSI sense. Instead, students practice the habits of mathematical research: experimenting with examples, developing conjectures, writing proofs, revising arguments, and learning how to communicate abstract reasoning clearly. Returning students have more opportunities to participate in seminars and original research projects, so the PROMYS experience can become more research-oriented for students who come back for additional summers.
PROMYS is not automatically free for every student, but it can be free for many domestic students depending on family income. For 2026, PROMYS says the six-week program is free for domestic students whose families make under $80,000 per year. For other students, the cost is up to $8,000 for the residential program, depending on the student’s financial aid award.
PROMYS also offers full and partial need-based financial aid, including support for room and board. Its financial-aid model is part of a broader effort to expand access to advanced mathematics and support Massachusetts students, as well as qualified students from across the United States and abroad. Financial aid for international students is considered case by case, so international applicants should not assume the program will be free, but they may still be eligible for support.
PROMYS can be a boost for college admissions, provided it can fit into your broader academic narrative. The program is selective, proof-based, and built around sustained work in Number Theory, and participation shows that you’re willing to tackle rigorous academic material beyond the standard high school curriculum.
PROMYS’ alumni outcomes are strong, contributing to its reputation. The program reports that more than half of alumni attend institutions such as Harvard, MIT, Princeton, Stanford, Yale, UC Berkeley, or Caltech, and that a large share go on to major in mathematics, computer science, engineering, physics, or related fields. Of course, those outcomes do not mean PROMYS causes elite college admissions, since the program already selects highly motivated math students, but they do show that PROMYS has a long track record of attracting and developing students who later pursue serious academic work in mathematics and STEM.
Students should be prepared to explain what they actually did: the types of problems they worked on, how they learned to write proofs, how their thinking changed, and how the experience shaped their future academic goals.
The strongest applicants usually show the same core qualities: deep mathematical curiosity, persistence with difficult problems, clear proof-writing, and real enthusiasm for learning mathematics outside the classroom. PROMYS does not require students to have extensive math competition experience, but it does expect applicants to be ready for sustained, abstract mathematical thinking. The problem set is the most important part of the application, so students should treat it as a serious, multi-week project rather than something to complete quickly before the deadline.
The biggest mistake applicants can make is treating PROMYS like a resume credential rather than a mathematically enriching experience. The application is designed to show how a student thinks, not just what courses they have taken or what awards they have won.
PROMYS can be valuable for college admissions, especially for students applying in mathematics, computer science, physics, engineering, or other quantitative fields that can lead to math-heavy professions. Its selectivity and rigor can help show serious academic commitment. PROMYS also offers a strong mentorship and peer network, with about 80 high school students and 25 undergraduate counselors living and working together on campus.
As mentioned, the program’s alumni outcomes are strong: PROMYS reports that more than half of alumni attend Harvard, MIT, Princeton, Stanford, Yale, UC Berkeley, or Caltech, about 60% major or double major in mathematics, at least 75% attend graduate school, and approximately 50% earn doctorates. Still, these outcomes reflect the strength of the students PROMYS attracts as well as the program itself. The opportunity cost is also important: for 2026, PROMYS is free for domestic students from families making under $80,000 per year, offers full and partial need-based aid, and charges up to $8,000 depending on financial aid.
PROMYS is probably a bit harder to get into than Ross, but the comparison is not exact because PROMYS does not publish an official acceptance rate. Ross states that in 2023, about 15% of complete applicants were accepted, while PROMYS discloses only that it admits about 60 first-year students and 20 returning students each summer, with third-party estimates often placing its acceptance rate around 10% to 13%.
On those numbers, PROMYS appears slightly more selective. However, both programs are highly selective in the same specialized way: neither is evaluating students like a university building a broad freshman class; both are looking for students who can thrive in an intense, proof-based number theory environment.
No. PROMYS says applicants do not need to solve every problem on the application problem set. The problem set is meant to show how creatively, persistently, and clearly you reason through difficult mathematical ideas. A thoughtful partial solution with strong reasoning is better than a complete-looking answer that is unclear, copied, or poorly justified.
PROMYS does not set a required page count for the solution set, and student submissions can vary widely depending on handwriting size, formatting, how many problems they attempt, and how much explanation they include. Anecdotal applicant reports range from roughly 10 to 20 pages to 40+ pages or more, so page count should not be treated as a measure of quality.
The better goal is to write enough to make each solution clear, rigorous, and readable, without adding padding or unnecessary repetition. A concise, well-explained solution set is stronger than a much longer one that is disorganized or difficult to follow.
No. PROMYS does not offer college credit, and students are not enrolled in Boston University courses for credit.
Yes. PROMYS explicitly says applicants may not use AI tools, online solutions, or outside help to produce their problem set answers. The program treats the problem set as evidence of how the student thinks, not just whether they can submit correct-looking proofs. PROMYS also says it may interview applicants about their solutions, which means students should be prepared to explain every step of their reasoning in their own words.
PROMYS is one of the most respected summer mathematics programs for ambitious high school students, especially for those interested in proof-based reasoning, Number Theory, and deep mathematical exploration.
Students who enjoy wrestling with difficult problems, writing rigorous arguments, and learning in an intense community of mathematically curious peers should consider applying. Even for students who are not admitted, exploring extracurricular activities and programs like PROMYS early can help them build stronger essential skills in mathematics, clarify their academic interests, and discover other deep mathematical enrichment opportunities in high school.
Those looking to learn more about research programs for high school students can check out our article categorizing them here. Some select programs that are similar to PROMYS include the following:
For high school students searching for prestigious summer research programs respected and valued by colleges, Pioneer Academics is a great alternative to this featured program. Pioneer Academics offers online, college-level research mentorship programs for high school students globally.
Based on a recent survey from Pioneer Academics alumni, 71 percent of Pioneer Research scholars’ college admissions records were to the top 20 US colleges and universities. Six percent of Pioneer’s alumni attended university-affiliated summer programs.
If you’re interested in conducting the highest level of research for high school students, consider joining a Pioneer information session to learn more about the Pioneer Research Institute.
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