| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | April 19, 2027 (2027 cycle) |
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| Cost | Unconfirmed — check official site | Catalog terms: Free attendance; check separate expenses; 2027: Unconfirmed — check official site | $2,750 (2027 cycle) |
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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 | Catalog terms: Application fee waiver: Amount: Unconfirmed — check official site. For students eligible for Free & Reduced Lunch or who qualify for financial aid.; 2027: Unconfirmed — check official site | 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 | Catalog terms: Non-refundable application processing fee: $40. Waived for students eligible for Free & Reduced Lunch or who qualify for financial aid.; Application fee waiver: Amount: Unconfirmed — check official site. For students eligible for Free & Reduced Lunch or who qualify for financial aid.; 2027: Unconfirmed — check official site | Application fee: $0; Deposit to reserve a spot: $100. Due once the application is approved; Suggested spending money: $100–$150 (2027 cycle) |
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| Stipend or pay | Unconfirmed — check official site | Catalog terms: Learning stipend based on total internship hours: $500–$1,500; 2027: Unconfirmed — check official site | Unconfirmed — check official site |
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| Eligibility | Grades 10–12; Grade timing: Unconfirmed — check official site | Grades 10–12 (provider uses rising grades) | Grades 10–11; Grade timing: Unconfirmed — check official site |
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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 | Residency: Reside in the United States throughout the program; Residency: Live within 50 miles of the internship position, or with adult family or friends near it for the summer; Requirement: Open to rising grades 10–12; Requirement: Have not held an ASE internship before; Requirement: Interest in a math or science career and readiness for a professional environment; Requirement: Reliable transportation to the internship location; Requirement: Proof of health insurance; Requirement: Mentor may not be a family member | Requirement: Open to grades 10–11; Requirement: Open in the summer after sophomore or junior year (students finishing grade 10 or 11); Requirement: One year of chemistry or physics |
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| Session dates or duration | Starts June 27, 2027; Ends August 7, 2027; 6 weeks (2027 cycle) | Catalog terms: 4–10 weeks; 2027: Unconfirmed — check official site | Starts June 7, 2027; Ends July 22, 2027 (2027 cycle) |
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| Format | In person | In person / Hybrid | In person |
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| Housing and supervision | Residential. Supervision and housing details: Unconfirmed — check official site | Non-residential. Supervision and housing details: Unconfirmed — check official site | Residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | Boston, MA | Portland, Corvallis, OR | Terre Haute, IN |
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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: Competitive: more than 400 applicants for fewer than 100 positions, with roughly 75 internships typically offered. Matching also depends on position prerequisites and mentor rankings. Application materials: Two adult recommendations; Interview with some mentors | Selection: Earlier 2026 instructions described selective application followed by first-come session placement after approval. Confirm the current 2027 review and placement process; no acceptance rate is published. Application materials: Recommendation from a counselor or teacher |
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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 2026-08-20 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24 |
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