| Application deadline | Unconfirmed — check official site | March 19, 2027 (2027 cycle) | February 1, 2027 (2027 cycle) |
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| Cost | Unconfirmed — check official site | Unconfirmed — check official site | $2,868–$12,838 (2027 cycle) |
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| Financial aid | Last year's cycle (2026): Free for U.S. families with adjusted gross income under $80,000; need-based aid up to full cost: Amount: Unconfirmed — check official site. Aid for international students is decided case by case.; 2027: Unconfirmed — check official site | Unconfirmed — check official site | Need-based scholarships (NYC Commuter or Online Summer, one course): Amount: Unconfirmed — check official site. Awards equal 25%-50% of the program or course cost; for permanent residents in the US or its five major territories. (2027 cycle) |
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| Expenses and aid conditions | Last year's cycle (2026): Free for U.S. families with adjusted gross income under $80,000; need-based aid up to full cost: Amount: Unconfirmed — check official site. Aid for international students is decided case by case.; 2027: Unconfirmed — check official site | Catalog terms: In-person breakfast and lunch: $0. Provided during the one-day Bloomington session.; 2027: Unconfirmed — check official site | Nonrefundable application fee: $80–$95. Columbia quotes the fee as $80 in its program cost and application materials sections and as $95.00 in its application fee section.; Non-refundable enrollment deposit (credited toward the program cost): $1,000–$3,500. $3,500 residential, $2,000 commuter 3-week, $1,000 for 1-week commuter and online sessions.; Course-specific fees for some in-person courses: $50–$200. Only for listed courses; most courses also need about $50 for books and field trips.; Need-based scholarships (NYC Commuter or Online Summer, one course): Amount: Unconfirmed — check official site. Awards equal 25%-50% of the program or course cost; for permanent residents in the US or its five major territories. (2027 cycle) |
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| Stipend or pay | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Eligibility | Grades 10–12; Grade timing: Unconfirmed — check official site | Grades 11–12 (provider uses rising grades) | Grades 8–12 when applying; check the provider's rules for graduating seniors |
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| Additional eligibility | Ages 14–18; Requirement: Open to grades 10–12; Requirement: Have completed 9th grade (or its equivalent) by the first day of the program; Requirement: Not yet enrolled as a full-time college or university student; Requirement: Graduating seniors may attend in the summer between high school and college or during a gap year | Requirement: Open to rising grades 11–12; Requirement: Minimum cumulative high school GPA of 3.5 on a 4.0 scale | Requirement: Open to students currently in grades 8–12 when applying; Requirement: Summer programs take rising 9th graders through current 12th graders, domestic and international; Requirement: NYC Residential Summer students must be at least 15 and, if 15, turn 16 by December 31 of the program year; Requirement: English proficiency equivalent to 90+ on the internet-based TOEFL or 6.5+ on the IELTS |
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| Session dates or duration | Starts June 27, 2027; Ends August 7, 2027; 6 weeks (2027 cycle) | Catalog terms: 0.14–1.14 weeks; 2027: Unconfirmed — check official site | Starts June 21, 2027; Ends August 6, 2027; 1–3 weeks (2027 cycle) |
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| Format | In person | In person / Online | In person / Online |
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| Housing and supervision | Residential. Supervision and housing details: 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 | Boston, MA | Bloomington, IN | New York, NY |
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| Selection and application | Selection: About 80 high-school students are selected through demonstrated mathematical thinking in the problem set, academic context, recommendation, transcript, and short answers. PROMYS does not publish the current applicant count or acceptance rate. Application materials: One letter of recommendation | 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 on why you hope to participate | Selection: Holistic admission seeks academically exceptional, curious, motivated, and mature students. Columbia publishes no current applicant or admit rate and no fixed GPA minimum. Application materials: Teacher recommendation; School counselor/administrator recommendation (NYC Residential and NYC Commuter Summer) |
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| Official sources | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-08-20Source 5 · checked 2026-08-20Source 6 · checked 2026-08-20Source 7 · checked 2026-08-20 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-10-24Source 5 · checked 2026-08-21Source 6 · checked 2026-08-20 |
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