| Application deadline | March 1, 2027 (2027 cycle) | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Financial aid | Unconfirmed — check official site | Last year's cycle (2026): Need-based financial aid: Amount: Unconfirmed — check official site. Historical 2026 terms included free attendance for domestic households below $85,000, case-by-case aid above that threshold and for international students, and possible travel grants. Confirm 2027 terms.; 2027: Unconfirmed — check official site | Last year's cycle (2026): Need-based aid and travel grants: Amount: Unconfirmed — check official site. Domestic and international invitees can receive aid; 2026 was free for domestic households below $85,000, with travel support available. Future thresholds may change.; 2027: Unconfirmed — check official site |
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| Expenses and aid conditions | Unconfirmed — check official site | Last year's cycle (2026): HCSSiM application: $0. The official finance page says applying is and will remain free.; Need-based financial aid: Amount: Unconfirmed — check official site. Historical 2026 terms included free attendance for domestic households below $85,000, case-by-case aid above that threshold and for international students, and possible travel grants. Confirm 2027 terms.; 2027: Unconfirmed — check official site | Last year's cycle (2026): Application fee: $0. HCSSiM states that applying is and will remain free.; Need-based aid and travel grants: Amount: Unconfirmed — check official site. Domestic and international invitees can receive aid; 2026 was free for domestic households below $85,000, with travel support available. Future thresholds may change.; 2027: Unconfirmed — check official site |
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| Stipend or pay | Catalog terms: Weekly salary: $500; 2027: 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 | Grades 9–12; Grade timing: Unconfirmed — check official site |
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| Additional eligibility | Citizenship: U.S. citizen; Residency: Enrolled at an Illinois high school; Requirement: Senior in 2027–28 or 2027 graduate; proof of insurance | Requirement: Be a high-school student who has not already graduated; Requirement: Show strong motivation for sustained, proof-oriented college-level mathematics; Requirement: Complete the applicant form, motivation letter, Interesting Test, and mathematical sponsor process when the next cycle opens; Requirement: Commit to the full six-week residential session under the published program model; Exclusion: Students who have already graduated from high school under the published FAQ; Exclusion: Assuming the historical Hampshire College campus, 2026 dates, or 2026 price applies in 2027; Exclusion: Assuming grades, college credit, admission to Hampshire College, or another college outcome | Residency: Domestic and international students may apply; Requirement: Be a current high-school student who has not yet graduated; Requirement: Show strong mathematical motivation and readiness through the application and Interesting Test; Requirement: Name a sponsor who knows the applicant in a mathematical context; Requirement: Commit to the full residential six-week program; Exclusion: Students who have already graduated high school; Exclusion: Application writing produced by generative AI or another person |
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| Session dates or duration | Starts July 12, 2027; Ends August 6, 2027; 4 weeks (2027 cycle) | Catalog terms: 6 weeks; 2027: Unconfirmed — check official site | Catalog terms: 6 weeks; 2027: Unconfirmed — check official site |
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| Format | Unconfirmed — check official site | In person | In person |
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| Housing and supervision | Unconfirmed — check official site | Residential. Supervision and housing details: Unconfirmed — check official site | Residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | Unconfirmed — check official site | New residential campus for 2027 is not announced; Amherst, Massachusetts was the historical 2026 location | Unconfirmed — check official site |
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| Selection and application | Unconfirmed — check official site | Selection: Application review uses the form, letter, Interesting Test, and mathematical sponsor recommendation; no current acceptance rate or 2027 capacity is published. Application materials: One sponsor who knows the applicant in a mathematical context and can provide a recommendation | Selection: HCSSiM expected 51 students in 2026 and reported more strong applications than it could accept; admission was rolling and used the letter, recommendation and Interesting Test rather than an age cutoff. Application materials: One recommendation from a sponsor who knows the student mathematically |
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| Official sources | Source 1 · checked 2026-10-10 | Source 1 · checked 2026-08-20Source 2 · checked 2026-08-20Source 3 · checked 2026-08-20Source 4 · checked 2026-08-20 | Source 1 · checked 2026-08-21Source 2 · checked 2026-08-21Source 3 · checked 2026-08-21Source 4 · checked 2026-08-20 |
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