| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Last year's cycle (2026): $3,096–$17,935; 2027: Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Financial aid | Last year's cycle (2026): Need-based Sibley Scholarships: Amount: Unconfirmed — check official site. Awarded first-applied, first-awarded until funds are exhausted.; 2027: Unconfirmed — check official site | Unconfirmed — check official site | Catalog terms: Delegate sponsorship by a Legion post, local business or community organization: Amount: Unconfirmed — check official site. Covers individual expenses in most cases.; 2027: Unconfirmed — check official site |
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| Expenses and aid conditions | Last year's cycle (2026): Application fee: $80. Non-refundable; fee waivers available.; Enrollment deposit after admission: $500. Non-refundable.; Limited-coverage accident insurance (international students and uninsured U.S. students): $80; Need-based Sibley Scholarships: Amount: Unconfirmed — check official site. Awarded first-applied, first-awarded until funds are exhausted.; 2027: Unconfirmed — check official site | Unconfirmed — check official site | Catalog terms: Delegate sponsorship by a Legion post, local business or community organization: Amount: Unconfirmed — check official site. Covers individual expenses in most cases.; 2027: Unconfirmed — check official site |
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| Stipend or pay | 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 | Unconfirmed — check official site |
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| Eligibility | Grades 8–12; Grade timing: Unconfirmed — check official site | Grades 10–12 when applying; check the provider's rules for graduating seniors | Grade 11; Grade timing: Unconfirmed — check official site |
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| Additional eligibility | Ages 13–18; Requirement: Open to grades 8–12; Requirement: Course choices depend on the student's age and grade level | 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 | Requirement: Open to grade 11; Requirement: Must not have attended Boys State before; Requirement: Open to high school boys; young women attend the separate American Legion Auxiliary Girls State |
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| Session dates or duration | Catalog terms: 1–7 weeks; 2027: Unconfirmed — check official site | Catalog terms: 8–10 weeks; 2027: Unconfirmed — check official site | Unconfirmed — check official site |
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| Format | In person / Online / Hybrid | In person / Online | In person |
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| Housing and supervision | Unconfirmed — check official site | Non-residential. Supervision and housing details: Unconfirmed — check official site | Unconfirmed — check official site |
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| Location | Providence, Barcelona, Oxford, RI, AK, FL | Participating university, government, and industry research sites; virtual projects may also be offered | Unconfirmed — check official site |
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| Selection and application | Selection: Brown reviews applications holistically for academic performance, intellectual curiosity, motivation, maturity, and English proficiency. Admission is separate from course enrollment, which depends on eligibility and remaining capacity; no umbrella acceptance rate is published. Application materials: Essay of 250 to 500 words; Optional supplementary essay; Recommendation (optional for most programs; required for Pre-Baccalaureate) | 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. | Application materials: School recommendation to the local American Legion post (in most states); Interview with the local American Legion post (in most states) |
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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 2026-10-24Source 7 · checked 2026-10-24Source 8 · checked 2026-10-10 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-08-20 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24 |
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