TL;DR
The Ross Mathematics Program is a six-week residential summer program where you study number theory, work through problem sets, and write proofs alongside other students. It costs $7,500 with tuition, housing, and meals included, and need-based financial aid is available. Applications for the most recent cycle have closed, and the next dates are TBA. If you want to work on your own research project with a mentor, you can apply to the Horizon Academic Research Program.
If you enjoy mathematics and want to explore topics beyond your school syllabus, the Ross Mathematics Program is worth considering. This six-week summer program focuses on number theory and gives you time to work through mathematical problems, write proofs, and discuss your ideas with other students. The program is residential, so you’ll also live on campus and take part in a community of students who share your interest in mathematics. In this guide, you’ll find details about the program’s cost, eligibility, admissions process, acceptance rate, and what you can expect during the six weeks.
You can also explore our guide to summer math programs for high school students to compare other options.
What is the Ross Mathematics Program?
The Ross Mathematics Program is a six-week residential summer program for pre-college students who want to study mathematics in depth. Its first-year curriculum focuses on number theory, a branch of mathematics that studies integers and their properties.
You will attend daily lectures, work through problem sets, discuss mathematical ideas in small groups, and write proofs to explain your reasoning. You will also explore problems independently and revise your solutions after receiving feedback.
Ross has been running since 1957, and its approach gives you an extended period to study one subject closely and learn how mathematicians develop ideas, test conjectures, and build logical arguments.
The program may suit you if you enjoy spending time on mathematical questions and want to understand why a solution works. Ross also describes the experience as a possible first step toward independent mathematical research, although the summer program itself focuses on learning mathematics through lectures, discussions, and problem sets.
Where is the Ross Mathematics Program held?
Ross is a residential program hosted at U.S. locations. The sites can vary between summers, and students stay in campus dormitories during the session.
The most recent summer session had two locations:
- Otterbein University, Columbus, Ohio
- Rose-Hulman Institute of Technology, Terre Haute, Indiana
Both sites hosted the program from June 14 to July 24, 2026. Students typically share a dorm room with a roommate, and most program activities take place within walking distance of their accommodation.
Ross also arranges airport transportation for students travelling without a parent or guardian. For the most recent session, students attending the Ohio site travelled through John Glenn Columbus International Airport, while students attending the Indiana site used Indianapolis International Airport. Check the official participant information for updates when the next session is announced.
What are the dates and application deadline?
The most recent Ross summer session ran from June 14 to July 24, 2026. The application deadline was March 8, and the admissions committee aimed to email decisions by mid-April.
The dates and deadline for the next summer session have not been announced. The official application page is the best place to check for updates.
Applications submitted after the March 8 deadline may not receive full consideration. If you plan to apply, give yourself enough time to work on the mathematics problems, prepare the written responses, and arrange your teacher recommendation.
Ross Mathematics Program quick facts
| Detail | Information |
| Program length | Six weeks |
| Program format | Residential summer program |
| Main subject | Number theory and proof-based mathematics |
| Cost | $7,500, including tuition, housing, and meals |
| Application deadline | TBA (most recent cycle: March 8) |
| Program dates | TBA (most recent cycle: June 14 to July 24) |
| Locations | Multiple locations across the U.S. (the most recent sites were Otterbein University in Ohio and Rose-Hulman Institute of Technology in Indiana) |
| Cohort size | Approximately 60 first-year students at each site |
| Eligibility | Pre-college students interested in mathematics; first-year students are usually 15–18 years old |
| Financial aid | Need-based financial aid is available |
| International applicants | Eligible to apply; reasonable English fluency is required |
| Application materials | School transcript, teacher recommendation, short essays, a video, and work on mathematics problems |
How much does the Ross Mathematics Program cost?
The full fee for the Ross Mathematics Program is $7,500. It covers six weeks of tuition, housing, meals, instructor and counselor expenses, and the regular costs of running the mathematics courses.
Need-based financial aid is available. Ross encourages accepted applicants whose families need financial assistance to apply for support. The program aims to provide enough assistance for every accepted student who needs it, although the amount available to each applicant may vary.
International students can also receive financial aid. Ross notes that it can rarely provide support for international travel expenses, so you should plan for flights and other travel costs separately.
Ross is a paid summer program, so participants do not receive a stipend. You can find the current fee and financial-aid instructions on the official Ross website.
Who is eligible for the Ross Mathematics Program?
The Ross Mathematics Program welcomes pre-college students who are interested in mathematics and ready to work on challenging problems.
Here are the main eligibility details:
- Age: First-year students are usually 15 to 18 years old. In rare cases, younger students or students who have already graduated from high school may be accepted.
- International applicants: Students from outside the United States can apply. Ross requires reasonable fluency in English.
- Academic preparation: You should be comfortable with standard high school mathematics and interested in exploring mathematical ideas in greater depth.
- Formal proof experience: Previous proof-writing experience is not listed as a requirement.
- GPA and test scores: Ross does not publish a minimum GPA or standardized test score requirement on its main participant information page.
- Math competitions: The program does not list competition participation as a requirement.
- Background: Ross encourages applications from students from underrepresented backgrounds in mathematics.
You can review the full details on the official eligibility and participant page. Read the application instructions carefully before submitting your materials.
How does the Ross Mathematics Program application process work?
The Ross application asks you to share your academic background and demonstrate how you approach mathematical problems. The official application materials list the following components:
- School transcript: Your academic record helps the admissions team understand your preparation.
- Teacher recommendation: A teacher who knows your work can provide context about your approach to learning.
- Short essays: You’ll answer questions about your interests and goals.
- Video: The application includes a video component.
- Mathematics problems: You’ll submit work on challenging problems provided as part of the application.
The mathematics problems are an important part of the application. Ross wants to see how you approach the questions and communicate your reasoning. Work through the problems carefully, show your steps, and explain why you think your approach works.
The most recent application deadline was March 8, with decisions expected by mid-April. The next deadline has not been announced. Check the Ross application and financial aid page for the next application window and instructions.
How can you strengthen your Ross Mathematics Program application?
The application gives you several ways to show your interest in mathematics and explain how you work through difficult questions. These steps can help you prepare.
1. Explain how you approach difficult problems
Think of a mathematical problem that took time to solve. Explain what you tried first, where you got stuck, and how you developed a new approach. A specific example gives the admissions team a clearer picture of your mathematical thinking.
2. Show your reasoning
When you work on the application problems, write down the steps that led you to your answer. Explain why you chose a particular method, how you tested your idea, and what you concluded. Clear reasoning helps readers follow your work.
3. Give yourself time to work through the math problems
Start early enough to revisit questions that you find difficult. You may notice a pattern, discover a mistake, or think of a new approach after spending more time with a problem. Leave time to check your solutions and make your explanations clear.
4. Use specific examples in your written responses
If a particular mathematical topic, class, book, or problem sparked your interest, explain what caught your attention. Describe what you wanted to understand and what you did to explore the idea further.
5. Be honest about what you find challenging
You can explain how you respond when a problem feels unfamiliar. Perhaps you try smaller examples, look for patterns, draw a diagram, or return to the question after a break. Describe your actual process and what you learn from it.
6. Choose a teacher who knows your work
Ask a teacher who can discuss your approach to learning and problem-solving. A recommendation with concrete examples can give the admissions team useful context about your academic interests and classroom work.
7. Read the application instructions carefully
Make sure you understand what each part of the application asks you to submit. Check the required documents, written responses, video instructions, and mathematics problems on the official application page.
8. Give your written explanations a final review
Before submitting, read through your responses and solutions. Check that your reasoning is easy to follow, your answers address the questions, and you have included the steps needed to explain your thinking.
How competitive is the Ross Mathematics Program?
The Ross Mathematics Program has reported that about 15% of applicants with complete applications were accepted in 2023. This is the latest acceptance-rate figure published in the program’s official FAQ. Ross describes admissions as competitive and notes that successful applicants generally have a strong high school record and do well on the mathematical problems included in the application.
The program expects approximately 60 first-year students at each site. With two sites in the most recent summer session, that meant around 120 first-year places across both locations.
The program accepts international applicants and reports that several students from outside the United States are admitted each year. It does not publish separate acceptance rates for domestic and international applicants.
For the official figures, see the Ross admissions FAQ.
Ross lists PROMYS at Boston University and the Honors Summer Math Camp at Texas State University as related mathematics programs.
You can also compare it with other options in Horizon’s guides to math programs for high school students and free summer math programs.
How is the Ross Mathematics Program structured?
Ross runs for six weeks and focuses mainly on number theory. You’ll attend lectures, join small-group discussions, work on problem sets, and spend much of your remaining time exploring mathematical questions independently.
1. Daily number theory lectures
You’ll attend daily lectures that introduce ideas and problems in number theory. Topics covered in the curriculum include:
- Euclid’s algorithm and greatest common divisors
- Diophantine equations
- Modular arithmetic
- Fermat’s theorem and the Chinese Remainder Theorem
- Binomial coefficients and polynomials
- Arithmetic functions and Gaussian integers
- Continued fractions and Pell’s equation
- Quadratic reciprocity
The exact topics appear across the program’s problem sets and lessons. You can read more on the official mathematics topics page.
2. Small-group discussions
You’ll meet regularly with a small group called a family group. Each group usually includes four to six students and a counselor. These discussions give you time to talk through problems, compare approaches, and ask questions about the mathematics you’re studying.
3. Challenging problem sets
Problem sets are a central part of the Ross experience. They ask you to investigate mathematical relationships, notice patterns, develop conjectures, test examples, and write proofs.
Some questions use the term PODASIP, which stands for “prove or disprove and salvage if possible.” These questions ask you to examine a statement, decide whether it is true, and see whether you can revise it into a statement that works if the original claim fails.
4. Feedback and revisions
You’ll submit your work and receive feedback from a counselor. You may have opportunities to revise your solutions and improve your arguments. Ross does not use numerical grades for its problem sets; the emphasis is on developing your mathematical understanding and communicating your reasoning.
5. Independent work and optional lectures
Required lectures and family-group discussions take about three hours each day. You’ll spend much of the remaining time working on problem sets and exploring the ideas introduced in class. Optional lectures may also be offered by counselors and professors.
6. Learning to write proofs
You’ll practise explaining why a mathematical statement is true, identifying gaps in an argument, and presenting your reasoning clearly. These skills are useful across advanced mathematics, where a correct answer needs a logical explanation.
7. Learning with other students
You’ll have opportunities to discuss problems with your classmates, hear different approaches, and work through ideas together. Ross places importance on building a mathematical community where students share their thinking and learn from one another.
What will you learn at the Ross Mathematics Program?
The program focuses on mathematical thinking and proof-writing. By the end of the six weeks, you’ll have spent substantial time working on:
- Problem-solving: Breaking unfamiliar questions into smaller steps and trying different approaches.
- Proof-writing: Building logical arguments and explaining why your conclusions follow from your assumptions.
- Number theory: Exploring integers, divisibility, congruences, and other mathematical relationships.
- Conjectures: Looking for patterns, proposing possible explanations, and testing them with examples.
- Mathematical communication: Writing solutions that other people can follow and evaluate.
- Revision: Using feedback to find gaps in your reasoning and improve your work.
- Collaboration: Discussing problems with peers and learning from their approaches.
The curriculum is especially relevant if you want to explore proof-based mathematics beyond what you typically encounter in school.
What is student life like at Ross?
Ross is a residential program, so your experience includes living on campus with other participants for six weeks. Students generally share dorm rooms, attend classes and discussions during the day, and spend additional time working on mathematical problems.
The program also places importance on its student community. You’ll have time to discuss ideas with classmates, work through problem sets together, and take part in campus life. Counselors support both the academic work and the residential experience.
Ross’s official page about life at the program has more information about housing, meals, and daily activities. For details about travel, health insurance, and other practical arrangements, review the participant FAQ.
What does a typical day at Ross look like?
Ross does not prescribe every hour of the day as a fixed schedule. Required classes and family-group discussions take about three hours, and students organise much of their remaining time around problem sets and mathematical work.
| Activity | What you can expect |
| Number theory lecture | Learn new concepts and explore mathematical questions |
| Family-group discussion | Work with a small group and counselor to discuss problems |
| Independent problem-solving | Spend extended time working through the problem sets |
| Feedback and revisions | Review your solutions and improve your reasoning |
| Optional lectures | Explore additional mathematical topics when offered |
| Community time | Live and learn alongside other students with similar interests |
The balance between scheduled activities and independent work means you should be prepared to spend considerable time thinking about the mathematics outside formal class sessions. The program’s Math at Ross page explains its daily academic structure in more detail.
Is the Ross Mathematics Program a good fit for you?
Ross may be a good fit if you enjoy mathematics and want to spend several weeks exploring a subject in depth. You should be ready to work independently, discuss ideas with other students, and explain your reasoning in writing.
Before applying, consider whether you would enjoy a residential program centred on number theory and proof-based problem-solving. It is also worth comparing the program with other opportunities based on your interests, budget, location, and summer availability.
If you’re looking for a program where you can develop a research question and work with a mentor on a project, you can explore this guide to math research programs for high school students.
What math students often ask before applying to this summer program
No. Proof-writing isn’t a requirement, and learning to write proofs is a main part of the six weeks. You start from standard high school math and build the skill through problem sets and counselor feedback.
No. Competition experience isn’t required, and the program isn’t built around contests. It focuses on proof-based number theory and working through problems with other students.
You have a short window. The program can’t take students who need to arrive more than two days after classes start, so check your travel and other commitments against the session dates before you apply.
Not during the six weeks, which center on lectures, problem sets, and discussions with counselors. If you want to carry out your own project with a mentor, the Horizon Academic Research Program offers online, one-to-one mentorship that ends in an independent research paper.
Image source: Horizon Academic Research Program