| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Unconfirmed — check official site | $2,499–$16,999 (2027 cycle) | Unconfirmed — check official site |
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| Financial aid | Unconfirmed — check official site | Limited scholarship assistance: Amount: Unconfirmed — check official site. Primarily provided through mentoring organizations; individual scholarships are limited. (2027 cycle) | 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 | Summer Discovery application fee: $100. Nonrefundable and not applied to tuition; scholarship applicants denied aid may receive it back subject to listed program exceptions.; Limited scholarship assistance: Amount: Unconfirmed — check official site. Primarily provided through mentoring organizations; individual scholarships are limited. (2027 cycle) | 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 | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Eligibility | Grades 7–11 when applying; summer rising grade is one higher | Grades 9–12; Grade timing: Unconfirmed — check official site | Grades 9–12; Grade timing: Unconfirmed — check official site |
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| Additional eligibility | Residency: Participants from around the world are welcomed; Requirement: Students currently in grades 7–11 who will enter grades 8–12 in 2027; Requirement: No GPA requirement stated by the programme | Residency: Domestic and international options are offered; destination and visa/entry requirements vary; Requirement: Be in grade 9-12 for the high-school offering; Requirement: Choose a campus and course matching the published grade and prerequisite rules; Requirement: Submit a complete application and $100 fee; Requirement: Meet program-specific health, conduct, housing and travel requirements; Requirement: Pay the updated 2027 deposit and balance after acceptance; Exclusion: Campus partnerships do not confer university student status or admission; Exclusion: Courses, grade ranges, dates, residential/commuter availability and academic prerequisites differ; Exclusion: The stale 2026 payment schedule is not a confirmed 2027 deadline; Exclusion: A certificate or recognition letter is not necessarily university credit or a transcript; Exclusion: Rolling review does not guarantee a preferred campus, course or roommate | 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 11, 2027; Ends July 24, 2027; 2 weeks (2027 cycle) | Catalog terms: 2–6 weeks; 2027: Unconfirmed — check official site | Catalog terms: 6 weeks; 2027: Unconfirmed — check official site |
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| Format | In person | In person | In person |
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| Housing and supervision | 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 | Spartanburg, South Carolina | Los Angeles, New Haven, Hanover, Ann Arbor, Washington, Berkeley, Austin, Santa Barbara, Philadelphia, Vancouver, Oxford, Cambridge, Multiple university campuses; residential and commuter options vary by listing | Unconfirmed — check official site |
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| Selection and application | Unconfirmed — check official site | Selection: Qualified students are admitted first come on a rolling basis until program, course and housing capacity fills. Highly specialized partner programs may have additional selection rules. | 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 2026-10-10Source 2 · checked 2026-10-10Source 3 · checked 2026-10-10Source 4 · checked 2026-08-21 | Source 1 · checked 2026-08-22Source 2 · checked 2026-08-22Source 3 · checked 2026-08-22Source 4 · checked 2026-08-22Source 5 · checked 2026-08-22 | 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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