| Application deadline | January 13, 2027 (2027 cycle) | March 19, 2027 (2027 cycle) | November 1, 2026 (2027 cycle) |
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| Cost | $4,180–$15,980 (2027 cycle) | Unconfirmed — check official site | Free attendance; check separate expenses (2027 cycle) |
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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) | Catalog terms: In-person breakfast and lunch: $0. Provided during the one-day Bloomington session.; 2027: Unconfirmed — check official site | 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 | Grades 10–12; Grade timing: Unconfirmed — check official site | Grades 10–11; 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 | Requirement: Have at least a 3.5 cumulative high-school GPA on a 4.0 scale; Requirement: For virtual sessions, be a current sophomore, junior, or senior; Requirement: For summer in-person sessions, be a rising junior or senior; Requirement: Submit both required short essays and GPA information by the deadline; Requirement: Be available for the full selected one-day or two-session program; Exclusion: The program is open to all eligible students, not only students who identify as women; Exclusion: Applicants below the 3.5 GPA minimum are directed to other programs; Exclusion: Late applications receive no exceptions, including technical-delay cases; Exclusion: Participation does not guarantee Kelley or IU admission, college credit, scholarship, recommendation, internship, job, or college-admissions advantage | Residency: Mississippi resident; Requirement: Completing grade 10 or 11 at application; never attended MGS; one academic qualification: gifted eligibility OR ACT 25 OR GPA 3.25; also demonstrated advanced ability. |
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| Session dates or duration | Catalog terms: 4–7 weeks; 2027: Unconfirmed — check official site | Catalog terms: 0.14–1.14 weeks; 2027: Unconfirmed — check official site | Starts June 6, 2027; Ends June 19, 2027; 2 weeks (2027 cycle) |
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| Format | In person / Online | 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 | Residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | Cambridge, Massachusetts | Bloomington, Indiana, Indiana University Bloomington campus and live virtual sessions | Columbus, Mississippi |
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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 | Selection: Kelley calls KWLI selective, limits seats, and reviews cumulative GPA and application essays after the deadline. It does not publish applicant totals, cohort sizes by session, acceptance rates, geographic quotas, or scoring weights. Application materials: 100-word statement explaining why the student hopes to participate | Application materials: Recent teacher recommendation (not counselor or homeschooling parent); Community-member recommendation |
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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 2026-10-09Source 2 · checked 2026-10-09 | Source 1 · checked 2026-10-09Source 2 · checked 2026-10-09Source 3 · checked 2026-10-09Source 4 · checked 2026-10-09Source 5 · checked 2026-08-21 |
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