| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Unconfirmed — check official site | $2,500–$5,800 (2027 cycle) | Last year's cycle (2026): $3,900; 2027: Unconfirmed — check official site |
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| Financial aid | 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 | Last year's cycle (2026): Need-based scholarships for online and commuter students: Amount: Unconfirmed — check official site; 2027: Unconfirmed — check official site |
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| Expenses and aid conditions | 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 | Application fee: $70. Non-refundable. (2027 cycle) | Last year's cycle (2026): Non-refundable application fee: $60. A fee waiver can be requested.; Lab kit fee (estimated, plus taxes and shipping): $265. International students may incur customs fees.; Need-based scholarships for online and commuter students: Amount: Unconfirmed — check official site; 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 | Grades 10–12; Grade timing: Unconfirmed — check official site | Grades 7–12 (provider uses rising grades) | Grades 9–12 when applying; check the provider's rules for graduating seniors |
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| Additional eligibility | 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 | Requirement: Open to rising grades 7–12; Requirement: Course minimums vary: Physics of the Electric Guitar is for rising 8th graders and older, Fun with DNA is for rising 7th and 8th graders, and the Piano Program is for intermediate and advanced pianists ages 11-18 | Requirement: Open to students currently in grades 9–12 when applying; Requirement: As and Bs in high school math and science classes; Requirement: Completed Algebra II; Requirement: Completed a course covering trigonometric functions; Requirement: Completed a full year of high school chemistry and/or physics with a lab (or a 4 or 5 on AP Chemistry or AP Physics 1); Requirement: Recent high school graduates may attend the summer before college |
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| Session dates or duration | Starts June 27, 2027; Ends August 7, 2027; 6 weeks (2027 cycle) | Starts June 27, 2027; Ends July 24, 2027; 1–4 weeks (2027 cycle) | Catalog terms: 5–6 weeks; 2027: Unconfirmed — check official site |
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| Format | In person | In person | Online |
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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 | Non-residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | Boston, MA | Lakeville, CT | Worldwide synchronous participation, subject to Eastern Time attendance and lab-kit shipping/customs feasibility |
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| Selection and application | 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: Rolling, course-specific admission; Hotchkiss does not publish a program-wide acceptance rate. Application materials: Two teacher recommendations | Selection: Completed applications are academically reviewed. Rising juniors and seniors are typical, talented rising sophomores may be considered, and older students receive priority when space is limited. Programs can fill before final deadlines; no acceptance rate is published. Application materials: One brief required essay and one brief optional essay; Teacher recommendation |
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| Official sources | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-08-20Source 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 2026-10-24Source 4 · checked 2026-10-24Source 5 · checked 2026-10-24Source 6 · checked 2026-10-24Source 7 · checked 2026-10-24Source 8 · checked 2026-10-24Source 9 · checked 2026-10-24Source 10 · checked 2026-10-24Source 11 · checked 2026-08-21Source 12 · checked 2026-08-21 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-10-24Source 5 · checked 2026-08-21Source 6 · checked 2026-08-21Source 7 · checked 2026-08-21Source 8 · checked 2026-08-21 |
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