| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Catalog terms: Free attendance; check separate expenses; 2027: Unconfirmed — check official site | Unconfirmed — check official site | Last year's cycle (2026): $3,900; 2027: Unconfirmed — check official site |
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| Financial aid | Unconfirmed — check official site | Last year's cycle (2026): Free for U.S. families with adjusted gross income under $80,000; need-based aid up to full cost: Amount: Unconfirmed — check official site. Aid for international students is decided case by case.; 2027: Unconfirmed — check official site | Unconfirmed — check official site |
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| Expenses and aid conditions | Unconfirmed — check official site | Last year's cycle (2026): Free for U.S. families with adjusted gross income under $80,000; need-based aid up to full cost: Amount: Unconfirmed — check official site. Aid for international students is decided case by case.; 2027: Unconfirmed — check official site | Unconfirmed — check official site |
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| Stipend or pay | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Eligibility | Grades 10–12 when applying; check the provider's rules for graduating seniors | Grades 10–12; Grade timing: Unconfirmed — check official site | Grades 9–12; Grade timing: Unconfirmed — check official site |
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| Additional eligibility | Residency: Puget Sound camp: primary residence in Pierce, south King, Kitsap or north Thurston counties; Residency: Yakima camp: primary residence in Yakima County; Requirement: Open to students currently in grades 10–12 when applying; Requirement: Has not attended M.A.S.H. Camp before; Requirement: Interest in healthcare professions such as nursing, physical therapy, pharmacy or another healthcare field; Requirement: Required vaccinations and a tuberculosis test before camp | Ages 14–18; Requirement: Open to grades 10–12; Requirement: Have completed 9th grade (or its equivalent) by the first day of the program; Requirement: Not yet enrolled as a full-time college or university student; Requirement: Graduating seniors may attend in the summer between high school and college or during a gap year | Minimum age 14; Residency: US; Requirement: Open to grades 9–12; Requirement: Must be 14 or older by the start of the program; Requirement: Good programming skills (Python, Java, C/C++ or other) and an understanding of computer science fundamentals; Requirement: Must be currently studying and residing in the United States; Requirement: Able to commit to the full commuter or virtual program schedule |
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| Session dates or duration | Catalog terms: 1 week; 2027: Unconfirmed — check official site | Starts June 27, 2027; Ends August 7, 2027; 6 weeks (2027 cycle) | Last year's cycle (2026): Starts June 29, 2026; 6 weeks; 2027: Unconfirmed — check official site |
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| Format | In person | In person | In person / Online |
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| Housing and supervision | Non-residential. Supervision and housing details: Unconfirmed — check official site | Residential. Supervision and housing details: Unconfirmed — check official site | Non-residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | Spokane, Yakima, WA | Boston, MA | Stony Brook, NY |
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| Selection and application | Selection: Competitive regional selection; official current applicant and seat counts are not published in the accessible notice. Application materials: Three required essays (150-250 words each) and one optional essay | Selection: About 80 high-school students are selected through demonstrated mathematical thinking in the problem set, academic context, recommendation, transcript, and short answers. PROMYS does not publish the current applicant count or acceptance rate. Application materials: One letter of recommendation | Selection: Mentors evaluate application strength and fit to limited project capacity; each accepted student receives a mentor assignment with the offer. Application materials: Essay (maximum 2 pages) on a computing or data analytics interest, programming skills and past projects; Teacher recommendation letter (science, math or computer science) |
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| Official sources | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-10-24Source 5 · checked 2026-10-24Source 6 · checked 2026-08-22Source 7 · checked 2026-08-22 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-08-20Source 5 · checked 2026-08-20Source 6 · checked 2026-08-20Source 7 · checked 2026-08-20 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24 |
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