| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Unconfirmed — check official site | Catalog terms: $7,465; 2027: Unconfirmed — check official site | Unconfirmed — check official site |
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| Financial aid | Unconfirmed — check official site | Catalog terms: Need-based scholarship: Amount: Unconfirmed — check official site. Limited; only where family financial need can be reliably verified, including through partner schools and non-profit organizations.; 2027: Unconfirmed — check official site | Unconfirmed — check official site |
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| Expenses and aid conditions | Unconfirmed — check official site | Catalog terms: Need-based scholarship: Amount: Unconfirmed — check official site. Limited; only where family financial need can be reliably verified, including through partner schools and non-profit organizations.; Full-scholarship deposit (refunded after completing the program): Amount: Unconfirmed — check official site; 2027: Unconfirmed — check official site | Unconfirmed — check official site |
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| Stipend or pay | 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 | Unconfirmed — check official site |
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| Eligibility | Grades 10–12 when applying; check the provider's rules for graduating seniors | Grades 9–12; Grade timing: Unconfirmed — check official site | Grades 9–12; Grade timing: Unconfirmed — check official site |
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| Additional eligibility | 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 grades 9–12; Requirement: Must demonstrate academic excellence and proficiency in English | Minimum age 16; Residency: San Diego County resident attending a REACH partner school; Requirement: Open to grades 9–12; Requirement: Completed the most recent semester of high school at a REACH partner school (Barrio Logan College Institute, Crawford, Del Lago Academy, Escondido, Hoover, Lincoln, Madison, Morse or Orange Glen); Requirement: At least 16 by the start of the pre-program boot camp; Requirement: At least one year each of high school chemistry and biology; Requirement: Minimum GPA of 3.0; Requirement: Commit to 40 hours per week, missing no more than 3 days; Requirement: Legally eligible to work in the United States, with a work permit if under 18; Requirement: Have not done the REACH summer internship before |
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| Session dates or duration | Catalog terms: 8–10 weeks; 2027: Unconfirmed — check official site | Catalog terms: 10 weeks; 2027: Unconfirmed — check official site | Last year's cycle (2026): Starts June 22, 2026; Ends August 7, 2026; 7 weeks; 2027: Unconfirmed — check official site |
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| Format | In person / Online | Online | In person |
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| Housing and supervision | Non-residential. Supervision and housing details: Unconfirmed — check official site | Non-residential. Supervision and housing details: Unconfirmed — check official site | Non-residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | Participating university, government, and industry research sites; virtual projects may also be offered | Online and available to high-school students worldwide | La Jolla, CA |
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| Selection and application | 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. | Selection: Pioneer uses holistic review of academic history, essays, interests, school materials, a video interview, and proctored timed writing. Decisions generally take six to eight weeks and may be admit, conditional, waitlist, or deny. The official pages publish no acceptance rate or automatic GPA/test threshold, and placement capacity varies by discipline. Application materials: Short essays on each interest area; Long essay; Video interview and proctored timed writing test (if selected to advance) | Selection: Only students at nine partner schools/programs were eligible in 2026. Finalists were interviewed and placements depended on laboratory/mentor capacity; no applicant total, cohort size or acceptance rate is published. Application materials: Virtual interview for finalists |
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| Official sources | 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 2026-10-24Source 4 · checked 2026-08-20Source 5 · checked 2026-08-20 | Source 1 · checked 2026-10-24Source 2 · checked 2026-08-21Source 3 · checked 2026-08-21 |
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