| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Last year's cycle (2026): $1,900–$7,290; 2027: Unconfirmed — check official site | Last year's cycle (2026): $6,600; 2027: Unconfirmed — check official site | Unconfirmed — check official site |
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| Financial aid | Last year's cycle (2026): Summer full or partial need-based scholarship: Amount: Unconfirmed — check official site. Completed 2026 cycle; limited to eligible U.S.-resident students.; 2027: Unconfirmed — check official site | Last year's cycle (2026): Need-based financial aid: Up to $6,600. Aid was available up to the full program fee; admission was decided before financial-aid consideration.; 2027: 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 |
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| Expenses and aid conditions | Last year's cycle (2026): Summer 2026 application fee: $200. Nonrefundable; part of the USD 700 initial payment.; Summer 2026 enrollment deposit: $500. Applied toward total program cost.; Summer full or partial need-based scholarship: Amount: Unconfirmed — check official site. Completed 2026 cycle; limited to eligible U.S.-resident students.; 2027: Unconfirmed — check official site | Last year's cycle (2026): Need-based financial aid: Up to $6,600. Aid was available up to the full program fee; admission was decided before financial-aid consideration.; Application fee: $0. Applying to MathPath is free.; 2027: 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 |
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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 8–12 (provider uses rising grades) | Unconfirmed — check official site | Unconfirmed — check official site |
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| Additional eligibility | Residency: Worldwide for the Green Mountains program; 2026 scholarships were restricted to eligible U.S. residents; Requirement: Be in grades 9-12 or be a motivated rising ninth grader; Requirement: Demonstrate interest in climate action, climate science, or sustainability; Requirement: For the summer application, provide an academic reference and a second academic or extracurricular reference; Exclusion: Current grade 8 students who are not rising to grade 9; Exclusion: Applicants seeking academic credit; these offerings are noncredit | Ages 11–14; Requirement: Turn 11 before the program starts; Requirement: Turn 15 only after the program ends; Requirement: Complete the Qualifying Test independently; Requirement: Demonstrate mathematical ability, interest, and persistence; Exclusion: Students outside the published age window | 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 |
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| Session dates or duration | Last year's cycle (2026): Starts July 5, 2026; Ends July 17, 2026; 2 weeks; 2027: Unconfirmed — check official site | Last year's cycle (2026): Starts June 28, 2026; Ends July 26, 2026; 4 weeks; 2027: Unconfirmed — check official site | Catalog terms: 6 weeks; 2027: Unconfirmed — check official site |
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| Format | Hybrid | In person | In person |
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| Housing and supervision | Residential. Supervision and housing details: 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 | Castleton, Vermont | Portland, Oregon | New residential campus for 2027 is not announced; Amherst, Massachusetts was the historical 2026 location |
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| Selection and application | Selection: The Green Mountains application is selective and was reviewed on a rolling basis until capacity. Application materials: Personal statement of no more than 300 words | Selection: Merit-based selection centered on the Qualifying Test and application context | 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 |
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| Official sources | Source 1 · checked 2026-08-20Source 2 · checked 2026-08-20Source 3 · checked 2026-08-20Source 4 · checked 2026-08-20Source 5 · checked 2026-08-20 | Source 1 · checked 2026-08-20Source 2 · checked 2026-08-20Source 3 · checked 2026-08-20Source 4 · checked 2026-08-20 | Source 1 · checked 2026-08-20Source 2 · checked 2026-08-20Source 3 · checked 2026-08-20Source 4 · checked 2026-08-20 |
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