| Application deadline | January 13, 2027 (2027 cycle) | March 1, 2027 (2027 cycle) | December 4, 2026 (2027 cycle) |
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| Cost | $4,180–$15,980 (2027 cycle) | Unconfirmed — check official site | Unconfirmed — check official site |
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| Financial aid | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Expenses and aid conditions | 2027 application fee: $75 (2027 cycle) | Unconfirmed — check official site | Unconfirmed — check official site |
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| Stipend or pay | Unconfirmed — check official site | Catalog terms: Weekly salary: $500; 2027: Unconfirmed — check official site | Unconfirmed — check official site |
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| Eligibility | Unconfirmed — check official site | Unconfirmed — check official site | Grades 11–12; Grade timing: Unconfirmed — check official site |
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| Additional eligibility | Ages 16–18; Citizenship: International students may apply to eligible formats with visa/English requirements; Citizenship: Financial aid is limited to U.S. citizens, permanent residents, and DACA recipients; Residency: Residential students live on campus; Residency: Commuters must live with a parent/guardian or approved adult age 25+ within reasonable commuting distance in New England; Residency: Online students participate from home; Requirement: Graduate high school and enter college in 2027, 2028 or 2029.; Requirement: Be at least 16 by June 13, 2027 and not turn 19 before July 31, 2027.; Requirement: Show maturity and academic readiness for intensive college-level work; Requirement: Meet selected-course prerequisites; Requirement: Submit English-proficiency evidence if English is not the native language; Requirement: Clear the calendar for the full program, especially residential study; Exclusion: An applicant may apply to only one Harvard Summer School high-school program in a year; Exclusion: International students using a Harvard-sponsored I-20 cannot take online classes; Exclusion: Participation does not guarantee Harvard College admission or another institution's acceptance of credit; Exclusion: No minimum GPA or required PSAT/SAT/ACT score is published | Citizenship: U.S. citizen; Residency: Enrolled at an Illinois high school; Requirement: Senior in 2027–28 or 2027 graduate; proof of insurance | Residency: School in Duval County or St. Johns County, Florida, for the upcoming academic year at application opening; Requirement: Minimum 3.5 unweighted GPA; Requirement: Attend mandatory orientation and training during the first two weeks of June; Requirement: Summer research commitment of 40 hours per week and school-year project work |
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| Session dates or duration | Catalog terms: 4–7 weeks; 2027: Unconfirmed — check official site | Starts July 12, 2027; Ends August 6, 2027; 4 weeks (2027 cycle) | Starts June 3, 2027 (2027 cycle) |
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| Format | In person / Online | Unconfirmed — check official site | In person |
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| Housing and supervision | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Location | Cambridge, Massachusetts | Unconfirmed — check official site | Jacksonville, Florida |
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| Selection and application | Selection: Harvard evaluates essays, transcripts/current grades, counselor report, GPA, maturity, readiness, and program fit holistically; it publishes no minimum GPA and does not require standardized academic tests. Application totals, admit rate, option/course capacities, waitlist odds, and scholarship odds are not published. Application materials: Student-created online application and short essays | Unconfirmed — check official site | Application materials: Use the science-teacher recommendation request; do not submit a separate recommendation letter |
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| Official sources | Source 1 · checked 2026-10-09Source 2 · checked 2026-10-09Source 3 · checked 2026-10-09Source 4 · checked 2026-10-09Source 5 · checked 2026-10-09 | Source 1 · checked 2026-10-10 | Source 1 · checked 2026-10-10Source 2 · checked 2026-10-10Source 3 · checked 2026-08-21 |
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