How hard is it to get into the Ross Mathematics Program? Ross is a six-week residential summer program in number theory for pre-college students, founded in 1957 by Arnold Ross, and in 2023 about 15% of applicants with complete applications were accepted. The program fee is $7,500 for six weeks of room, board and instruction, financial aid is available to admitted students with need, and the deciding part of the application is a set of challenging math problems posted each winter, with a March deadline.
Facts come from rossprogram.org and one named third-party guide as of November 2026, all linked in the Sources section. Ross has not posted 2027 dates yet; 2027 dates are usually posted in the fall or winter, so check the official page.
What the Ross Program is
The Ross Program is a six-week intensive summer experience for motivated pre-college students who want to explore mathematics. Its motto is "Think deeply about simple things." Instead of a menu of topics, every first-year student studies one subject all summer: number theory, the study of the integers and their properties.
The program has a long history:
| Years | Where Ross ran |
|---|---|
| 1957 to 1963 | University of Notre Dame, under founder Arnold Ross |
| 1964 to 2018 | Ohio State University (except 1975 to 1978, at the University of Chicago) |
| 2019 onward | Ohio Dominican University, after separating from Ohio State; online in 2020 and 2021 |
| 2022 | In-person sessions resumed, with Rose-Hulman Institute of Technology added |
| 2026 | Otterbein University (Columbus, Ohio) and Rose-Hulman Institute of Technology (Terre Haute, Indiana) |
Arnold Ross directed the program until 2000, Daniel Shapiro until 2018, and Jim Fowler since 2019. The Ross Mathematics Foundation was created in 2018 to manage the program's finances. A related five-week program, Ross/Asia, has run in China each summer since 2016. Ross alumni founded two other well-known math programs, Honors Summer Math Camp in 1988 and PROMYS in 1989.
What a summer at Ross looks like
| Part of the day | What happens |
|---|---|
| Morning | Number theory lecture |
| After lecture | Small-group discussion in a "family" of about 4 to 6 students led by a counselor |
| Required total | About three hours of class a day |
| The rest of the day | Problem sets, optional elective lectures, more problem sets |
| Weekends | Mostly mathematics; counselors may organize Ultimate Frisbee, a talent show or off-campus trips |
The first-year course is built around problem sets. Students investigate related problems over the summer, make conjectures, write proofs and explore generalizations. The program expects about 60 first-year students at each site, supported by roughly 12 to 15 counselors who live in the same dormitory. Counselors are expected to have experience with proof writing and some teaching.
Daily life is deliberately simple. Students work with pencil and paper, phones and electronics are restricted, game systems and TVs are not allowed, and everyone stays inside the dorm after dark. Travel on campus is on foot. Staff meet students at the Columbus or Indianapolis airport.
Ross gives no official university credit. For visa purposes it calls itself a "mathematical vacation." Its value is the mathematics and the habit of working on hard problems for weeks, not a transcript line.
Who is eligible
Ross does not post a formal grade requirement. Its FAQ says:
- Nearly all first-year students are 15 to 18 years old, with an average age of 16 or 17.
- It rarely admits exceptionally mature 14-year-olds or students who have already finished high school.
- Students come from across the US and several other countries, including China, South Korea and India. International students need reasonable English fluency and can attend on a B-2 tourist visa.
- In 2023, about one-third of participants identified as female.
Admission is not automatic. Ross says successful applicants generally have a strong high school record and strong work on the application problems.
What Ross costs
| Item | Amount |
|---|---|
| Program fee | $7,500 |
| What it covers | Six weeks of room and board (three meals a day), instructors, counselors and course costs |
| Not covered | Travel to and from the site, medical insurance valid in Ohio or Indiana, optional trip fees, personal spending |
| Financial aid | Available to admitted students with need; contact ross@rossprogram.org after admission |
| Outside scholarships Ross names | Mu Alpha Theta, the Davidson Institute, the Jack Kent Cooke Foundation, local institutions |
| International aid | Some aid available; travel is rarely covered |
Ross does not list an application fee on its application page. For how this compares with other summer options, see how much high school research programs cost.
Dates and deadlines
| Milestone | 2026 cycle (latest posted) |
|---|---|
| Application deadline | March 8, 2026; later applications may not receive full consideration |
| Decisions | Emailed by mid-April |
| Program dates, both US sites | June 14 to July 24, 2026 |
| 2027 cycle | Not posted yet; expect the problems and application in winter 2027 |
Students applying for summer 2027 should plan on a deadline in early March 2027 and start on the problems as soon as they are posted.
The Ross acceptance rate
Ross is one of the few selective summer math programs to publish a figure: in 2023, about 15% of applicants with complete applications were accepted. Two things follow from the wording. The rate counts only complete applications, so incomplete ones are not in the denominator. And with about 60 first-year students at each of two US sites, the first-year class is roughly 120 students. Pioneer Academics, a third-party guide, repeats the 15% figure and attributes it to the same FAQ.
The application problems
The problems are the heart of the Ross application. Ross posts them on its application portal each winter and describes them simply as challenging math problems; its FAQ says strong work on them is one of the two things successful applicants have in common. Ross does not give hints, though applicants can email ross@rossprogram.org with clarifying questions about terminology or wording. Third-party guides such as Pioneer Academics advise attempting every problem and showing clear reasoning, and practicing proofs on divisibility, primes and modular arithmetic.
How to approach them:
What the application asks for
| Component | What Ross requires |
|---|---|
| Math problems | Your work on the year's challenging problems |
| Short essays | Responses to several short essay questions |
| Video | A short application video |
| Teacher recommendation | One |
| Transcript | Your school transcript |
| Deadline | Early March (March 8 in 2026) |
How to be competitive
The odds, frankly
About 85% of complete applicants are turned away. Many of them are excellent students who would have done well. Ross is also a math program for students who want to spend six weeks on one subject, almost entirely on their own problem sets, with limited contact with the outside world. That is the right summer for some students and the wrong one for others.
Apply if the problems excite you, and plan the summer as if the answer is no. Ross itself names PROMYS as the most similar program. Other selective options to compare are MIT PRIMES, the Simons Summer Research Program, RSI and the Summer Science Program.
If you do not get in
Decisions come in mid-April. That leaves the summer and fall before applications, enough time to produce the thing selective colleges notice most from a mathematically strong student: original work they started, carried through and wrote up.
Ross builds mathematical maturity. It is not designed to produce a research paper or a science fair entry, and it gives no credit. Most students admitted to selective colleges with a research profile built that research on their own timeline with a mentor, whether or not they attended a selective summer program.
The YRI Fellowship is built for that: ten weeks one on one with a PhD mentor on a question the student chooses, the student as first author, a paper submitted to IEEE, Springer or Elsevier venues, ISEF and JSHS preparation, and a letter of recommendation from the mentor. Mentorship continues at no extra cost until the paper is published. 87% of Fellows publish and 73% place at competitions, and Fellows have been admitted to Brown, Johns Hopkins, Stanford, Caltech and Harvard. It costs $2,997, with a three-month payment plan and case-by-case scholarships. Admissions are rolling, so a student who hears from Ross in April can start in May. For how admissions officers read this kind of work, see how research papers help with Ivy League admissions.
Download the YRI Fellowship brochure
The program, the outcomes, the mentors and the tuition, in one PDF you can read with your family.
Related guides
- MIT PRIMES guide
- Simons Summer Research Program guide
- How to get into RSI
- Free research programs for high school students
- Summer research programs for 2027: deadlines, costs and odds
- How to get into MIT
Frequently Asked Questions
What is the Ross Mathematics Program acceptance rate?
Ross says that in 2023 about 15% of applicants with complete applications were accepted. The program expects about 60 first-year students at each of its two US sites.
How much does the Ross Program cost?
The program fee is $7,500, which covers six weeks of room and board, instructors and counselors. Financial aid is available to admitted students with need, and Ross names Mu Alpha Theta, the Davidson Institute and the Jack Kent Cooke Foundation as outside scholarship sources.
What are the Ross application problems?
They are a set of challenging math problems posted on the application portal each winter. Ross gives no hints but answers clarifying questions about wording. Attempt every problem and show your reasoning, even where you cannot finish.
When is the Ross Program deadline?
The 2026 deadline was March 8, 2026, with decisions emailed by mid-April. Ross has not posted 2027 dates yet; expect a similar early-March deadline and check the official site.
Where is the Ross Program held?
In 2026, Ross ran at Otterbein University in Columbus, Ohio, and Rose-Hulman Institute of Technology in Terre Haute, Indiana, both from June 14 to July 24. A related five-week program, Ross/Asia, runs in China.
How old do you have to be for Ross?
Ross does not set a formal grade cutoff. Nearly all first-year students are 15 to 18, with an average age of 16 or 17, and the program rarely admits 14-year-olds or recent graduates.
Can international students apply to Ross?
Yes. Several international students are accepted each year, they need reasonable English fluency, and some financial aid is available, though travel is rarely covered.
What should I do if I am not admitted to Ross?
Do original work on your own timeline. The YRI Fellowship pairs a student with a PhD mentor for ten weeks, one on one, and ends with a first-author paper submitted to a peer-reviewed venue plus ISEF and JSHS preparation. 87% of Fellows publish. Admissions are rolling and the application takes ten minutes with no fee.
Sources
- Ross Mathematics Program: homepage (six-week program, motto, 2026 sites and dates)
- Ross Mathematics Program: History (1957 founding, Arnold Ross, locations, directors, Ross/Asia, foundation)
- Ross Mathematics Program: Mission Statement
- Ross Mathematics Program: Math at Ross (number theory, three hours daily, problem sets)
- Ross Mathematics Program: Life at Ross (daily schedule, dorm, meals, weekends)
- Ross Mathematics Program: FAQ (15% acceptance in 2023, 60 students per site, ages, international students, no credit)
- Ross Mathematics Program: Application and Financial Aid (components, March 8 deadline, $7,500 fee, aid, decisions)
- Ross Mathematics Program: Counselors (family size, qualifications)
- Pioneer Academics: Ross Mathematics Program acceptance rate and admissions guide