| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Last year's cycle (2026): $3,989–$5,245; 2027: Unconfirmed — check official site | $3,445–$7,195 (2027 cycle) | $10,200 (2027 cycle) |
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| Financial aid | Last year's cycle (2026): Scott Simenas Award (need-based scholarship and stipend): Amount: Unconfirmed — check official site. Preference for students from Boston Public High Schools; no other financial aid is offered.; 2027: Unconfirmed — check official site | Sibling discount (5% of tuition): Amount: Unconfirmed — check official site. Discounts cannot be combined.; Educator-parent discount (10% of tuition): Amount: Unconfirmed — check official site. Requires proof of full-time employment as a primary or secondary educator.; Scholarships through partner organizations: Amount: Unconfirmed — check official site (2027 cycle) | 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) |
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| Expenses and aid conditions | Last year's cycle (2026): Nonrefundable application fee: $75; Nonrefundable enrollment deposit applied to tuition: Amount: Unconfirmed — check official site; Scott Simenas Award (need-based scholarship and stipend): Amount: Unconfirmed — check official site. Preference for students from Boston Public High Schools; no other financial aid is offered.; 2027: Unconfirmed — check official site | Application fee: $95. Non-refundable.; Enrollment deposit: $700; Sibling discount (5% of tuition): Amount: Unconfirmed — check official site. Discounts cannot be combined.; Educator-parent discount (10% of tuition): Amount: Unconfirmed — check official site. Requires proof of full-time employment as a primary or secondary educator.; Scholarships through partner organizations: Amount: Unconfirmed — check official site (2027 cycle) | 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) |
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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 (provider uses rising grades) | Grades 7–12 and first-year college (provider uses rising grades) | Grades 10–12 (provider uses rising grades) |
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| Additional eligibility | Requirement: Open to rising grades 10–12; Requirement: International applicants whose native language is not English must show English proficiency (e.g., TOEFL, IELTS or Duolingo) | Requirement: Open to rising grades 7–13; Requirement: High school trips: entering 9th grade through graduating 12th grade; Requirement: Middle school trip: entering 7th grade through graduating 8th grade | 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 |
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| Session dates or duration | Starts June 20, 2027; Ends August 6, 2027; 2 weeks (2027 cycle) | Catalog terms: 1–3 weeks; 2027: Unconfirmed — check official site | Starts June 27, 2027; Ends July 24, 2027; 4 weeks (2027 cycle) |
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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 | 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 | Program-specific international and U.S. territory itineraries; current departures use Houston, New York, Miami or self-booked flights | Leadville, CO |
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| Selection and application | Application materials: Personal statement of 500-750 words | Selection: Capacity- and fit-based enrollment rather than a single selective cohort. A completed application and payment reserve a space subject to trip availability, documentation, health and conduct requirements. | 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 |
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| Official sources | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-10-10 | 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 |
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