| Application deadline | Unconfirmed — check official site | January 13, 2027 (2027 cycle) | January 1, 2027 (2027 cycle) |
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| Cost | Unconfirmed — check official site | $4,180–$15,980 (2027 cycle) | 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 | Unconfirmed — check official site | 2027 application fee: $75 (2027 cycle) | Unconfirmed — check official site |
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| Stipend or pay | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Eligibility | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Additional eligibility | Minimum age 16; Requirement: Daily Operations: age 16-20, 50+ summer service hours, interview, and mandatory orientation; Requirement: CIT: age 16+, at least two full camp weeks, interviews, and mandatory orientation and training; Requirement: Be at least 18 to assist with teen-camp weeks; Requirement: If selected, complete the City application and Level 2 background check; Exclusion: The City currently offers no Gumbo Limbo internships; Exclusion: Naturalist walks and specialized assignments require prior hours and additional training; Exclusion: Community-service hours for Daily Operations depend on completing more than 50 hours under program rules | 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 | Requirement: Be entering grade 10, 11, or 12 after the summer; Requirement: Demonstrate readiness and fit through a purpose statement, writing sample, transcript, and teacher/counselor recommendation; Requirement: Commit to the entire supervised residential program, community code, enrollment, health, and payment requirements; Exclusion: Current grade 12 graduates and students below the rising-10th-grade level are not listed as eligible; Exclusion: No college credit is awarded; Exclusion: Past international participation does not by itself confirm 2027 visa, age, guardian, insurance, or travel eligibility |
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| Session dates or duration | Unconfirmed — check official site | Catalog terms: 4–7 weeks; 2027: Unconfirmed — check official site | Starts June 20, 2027; Ends July 3, 2027; 2 weeks (2027 cycle) |
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| Format | In person | In person / Online | In person |
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| Housing and supervision | Non-residential. Supervision and housing details: Unconfirmed — check official site | Unconfirmed — check official site | Residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | Boca Raton, Florida, Gumbo Limbo Nature Center and assigned environmental camp sites | Cambridge, Massachusetts | Portland |
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| Selection and application | Selection: Only 35 applicants were accepted across the two 2026 summer tracks; interviews, availability, and program fit determine selection. Application materials: Interview with the volunteer coordinator for Daily Operations; Interviews with the volunteer coordinator and camp director for CIT | 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 | Selection: The director reviews complete applications. The program describes approximately 60 participants and workshops capped at 12, but applicant count, acceptance rate, scoring rubric, and waitlist policy are not published. Application materials: Application;300-word statement of purpose; writing sample no more than five pages; high-school transcript; teacher or counselor recommendation. |
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| Official sources | Source 1 · checked 2026-10-09Source 2 · checked 2026-08-22Source 3 · checked 2026-08-22 | 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 2026-10-12Source 2 · checked 2026-08-21Source 3 · checked 2026-08-21Source 4 · checked 2026-08-20 |
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