| Application deadline | February 5, 2027 (2027 cycle) | Unconfirmed — check official site | Unconfirmed — check official site |
|---|
| Cost | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
|---|
| 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 |
|---|
| 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 |
|---|
| Stipend or pay | Catalog terms: Summer stipend: $1,200; 2027: Unconfirmed — check official site | Unconfirmed — check official site | Catalog terms: Summer I fellowship award/stipend: $4,000; 2027: Unconfirmed — check official site; Catalog terms: Summer II fellowship award: $4,000; 2027: Unconfirmed — check official site |
|---|
| Eligibility | Grade 11 when applying; summer rising grade is one higher | Grades 10–12; Grade timing: Unconfirmed — check official site | Grades 10–12 when applying; check the provider's rules for graduating seniors |
|---|
| Additional eligibility | Minimum age 16; Citizenship: Legally authorized to work in the United States; Residency: NY; Residency: NJ; Residency: CT; Requirement: Open to students currently in grade 11 when applying; Requirement: Must live in New York, New Jersey, or Connecticut within 25 miles of MSK's Main Campus on the Upper East Side of Manhattan; Requirement: Must be 16 or older by June 2027; Requirement: Science GPA of 3.5; Requirement: Must commit to the full eight weeks onsite | 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 students currently in grades 10–12 when applying; Requirement: Family annual income must not exceed 300% of the Federal Poverty Guidelines, documented by a 1040, free/reduced lunch, SNAP/WIC, TRIO participation or SAT/ACT fee-waiver eligibility; Requirement: Must have completed at least one high school chemistry course; Requirement: Must demonstrate an interest in science and/or chemistry; Requirement: Students under 18 need a parent or guardian's permission; Requirement: In the 2026 cycle, graduating high school seniors were also eligible |
|---|
| Session dates or duration | Starts June 29, 2027; Ends August 20, 2027; 8 weeks (2027 cycle) | Starts June 27, 2027; Ends August 7, 2027; 6 weeks (2027 cycle) | Catalog terms: 8–10 weeks; 2027: Unconfirmed — check official site |
|---|
| Format | In person | In person | In person / Online |
|---|
| 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 |
|---|
| Location | New York, NY | Boston, MA | Participating university, government, and industry research sites; virtual projects may also be offered |
|---|
| Selection and application | Application materials: Short essay responses; Two confidential recommendation letters from a STEM teacher, guidance counselor or research mentor | 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: Local coordinators select among financially and academically eligible applicants based on performance, science interest, full-summer availability, site capacity/budget, safe commute, and mentor/project fit. ACS publishes no single current acceptance rate. |
|---|
| Official sources | Source 1 · checked 2026-10-24 | 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 2026-08-20 |
|---|