| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Unconfirmed — check official site | $10,200 (2027 cycle) | Last year's cycle (2026): $7,208; 2027: Unconfirmed — check official site |
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| Financial aid | Last year's cycle (2026): 2026 Dean's Fellowship for online Pre-College: Up to $950. Need-based, expected average $500, and available only to students ultimately registered online. No 2027 aid is announced.; 2027: Unconfirmed — check official site | Need-based financial aid: Amount: Unconfirmed — check official site. About 40% of students receive aid; average award is 70% of tuition; awards include free or reduced-price gear rental and top packages include flights. (2027 cycle) | Last year's cycle (2026): Need-based financial aid and travel grants: Amount: Unconfirmed — check official site. Free for domestic students with household income under $85,000; case-by-case awards above that and for international students.; 2027: Unconfirmed — check official site |
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| Expenses and aid conditions | Last year's cycle (2026): 2026 Pre-College application fee: $85. Historical nonrefundable fee; not confirmed for 2027.; 2026 initial tuition payment: $1,950. Applied toward total tuition and initiated course registration; not an additional fee. Course placement remained subject to availability.; 2026 Dean's Fellowship for online Pre-College: Up to $950. Need-based, expected average $500, and available only to students ultimately registered online. No 2027 aid is announced.; 2027: Unconfirmed — check official site | Summer Term 2027 student account deposit: $500. Returned if unused.; Need-based financial aid: Amount: Unconfirmed — check official site. About 40% of students receive aid; average award is 70% of tuition; awards include free or reduced-price gear rental and top packages include flights.; Clarity financial aid application fee: $65. Only for aid applicants; automatically waived below a certain family income, or on request. (2027 cycle) | Last year's cycle (2026): Application: $0. Applying is free.; Need-based financial aid and travel grants: Amount: Unconfirmed — check official site. Free for domestic students with household income under $85,000; case-by-case awards above that and for international students.; 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 9–12 when applying; check the provider's rules for graduating seniors | Grades 10–12 (provider uses rising grades) | Grades 9–12; Grade timing: Unconfirmed — check official site |
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| Additional eligibility | Requirement: Open to students currently in grades 9–12 when applying; Requirement: Cumulative GPA of 3.0 or higher on a 4.0 scale; Requirement: Successful completion of 9th grade before the program starts; Requirement: Some programs require specific prior coursework | Ages 14–18; Requirement: Open to rising grades 10–12; Requirement: Willing to spend extended periods (10 days) outdoors in wilderness settings; no previous outdoor experience is required | Requirement: Open to grades 9–12; Requirement: Must not have already graduated from high school; Requirement: Most participants have just finished 10th or 11th grade; students who just completed 9th grade with more advanced math have attended; Requirement: International students are welcome to apply |
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| Session dates or duration | Catalog terms: 2 weeks; 2027: Unconfirmed — check official site | Starts June 27, 2027; Ends July 24, 2027; 4 weeks (2027 cycle) | Last year's cycle (2026): Starts June 28, 2026; Ends August 8, 2026; 6 weeks; 2027: Unconfirmed — check official site |
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| Format | In person / Online | 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 | Baltimore, MD | Leadville, CO | New residential campus for 2027 is not announced; Amherst, Massachusetts was the historical 2026 location |
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| Selection and application | Selection: Applicants must meet GPA, grade-completion, document, and course-prerequisite rules; course placement remains capacity-dependent. No general acceptance rate is published. | Selection: HMI describes a typical cohort of 12-20 students; it does not publish a current applicant count or acceptance rate. Application materials: Summer Term application with two essay questions; Two teacher recommendations (at least one from a core academic teacher); 15-30 minute interview with the admissions team | Selection: Application review uses the form, letter, Interesting Test, and mathematical sponsor recommendation; no current acceptance rate or 2027 capacity is published. Application materials: Letter of recommendation from a sponsor who knows you in a mathematical context |
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| Official sources | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-08-20 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-08-22Source 5 · checked 2026-08-22Source 6 · checked 2026-08-22 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-10-24 |
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