| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Unconfirmed — check official site | $400–$500 (2027 cycle) | Unconfirmed — check official site |
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| Financial aid | Unconfirmed — check official site | Financial assistance: Amount: Unconfirmed — check official site (2027 cycle) | 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 |
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| Expenses and aid conditions | Last year's cycle (2026): SPROG 2026 ticket: $0. Participants could select the USD 0 option with the published SPROG26 code.; Optional contribution: $0–$200. Voluntary contribution toward Sierra Club's costs.; Four nights of dorm lodging and bedding: $0. Provided by the program.; Program meals: $0. All meals were provided.; 2027: Unconfirmed — check official site | Financial assistance: Amount: Unconfirmed — check official site (2027 cycle) | 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 |
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| Stipend or pay | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Eligibility | Unconfirmed — check official site | Grades 9–12; Grade timing: Unconfirmed — check official site | Grades 10–12; Grade timing: Unconfirmed — check official site |
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| Additional eligibility | Ages 15–25; Requirement: Be age 15–25 by August 5, 2026; Requirement: Attend the full five-day residential session; Requirement: Provide emergency, medical, dietary, accessibility, travel, and room information; Requirement: Sign the participant waiver; Requirement: Obtain a parent signature if under 18; Exclusion: Applicants younger than 15 or older than 25 for the 2026 session | Requirement: Open to grades 9–12 | 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 |
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| Session dates or duration | Last year's cycle (2026): Starts August 5, 2026; Ends August 9, 2026; 0.7 weeks; 2027: Unconfirmed — check official site | Starts June 27, 2027; Ends July 2, 2027; 1 week (2027 cycle) | Starts June 27, 2027; Ends August 7, 2027; 6 weeks (2027 cycle) |
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| Format | In person | In person | In person |
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| Housing and supervision | Residential. Supervision and housing details: Unconfirmed — check official site | Residential. Supervision and housing details: Unconfirmed — check official site | Residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | Little Switzerland, North Carolina | St. Paul, MN | Boston, MA |
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| Selection and application | Selection: Registration-based 2026 session; capacity and selection method were not stated | Selection: 2026 applications were first-come, first-served for 150-200 places per session; the 2027 capacity and selection method are not announced. | 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 |
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| Official sources | Source 1 · checked 2026-08-20Source 2 · checked 2026-08-20Source 3 · checked 2026-08-20 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-08-21Source 4 · checked 2026-08-21 | 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 |
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