| Application deadline | Unconfirmed — check official site | February 5, 2027 (2027 cycle) | 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 | 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 | Unconfirmed — check official site | Unconfirmed — check official site |
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| Expenses and aid conditions | 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 | Unconfirmed — check official site | Unconfirmed — check official site |
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| Stipend or pay | Unconfirmed — check official site | 2027 summer stipend: $1,200 (2027 cycle) | Unconfirmed — check official site |
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| Eligibility | Unconfirmed — check official site | Grade 11 when applying; summer rising grade is one higher | Grade 11 when applying; summer rising grade is one higher |
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| Additional eligibility | 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 | Minimum age 16; Citizenship: Legally authorized to work in the United States.; Residency: New York, New Jersey or Connecticut, within 25 miles of MSK’s main Upper East Side campus.; Requirement: Current high-school junior with a science GPA of at least 3.5, age 16 by June 2027 and availability for the entire eight weeks. | Citizenship: U.S. citizens eligible regardless of residence; Citizenship: Non-U.S. citizens already in the United States on F-1 status eligible; Citizenship: Other U.S. visa holders must ask GSTEM to confirm eligibility; Residency: Non-U.S. citizens living outside the United States are not eligible; Requirement: Be a current high-school junior; Requirement: Show strong academic work, STEM aptitude, and demonstrated STEM interest; Requirement: Support GSTEM's mission of serving groups historically excluded from STEM; Requirement: Attend every day for all six weeks; Requirement: Do not participate in another program simultaneously; Exclusion: Current sophomores, seniors, and non-U.S. citizens living outside the United States; Exclusion: Applicants unable to attend the full six-week program |
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| Session dates or duration | Catalog terms: 6 weeks; 2027: Unconfirmed — check official site | Starts June 29, 2027; Ends August 20, 2027 (2027 cycle) | 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 | Non-residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | New residential campus for 2027 is not announced; Amherst, Massachusetts was the historical 2026 location | Unconfirmed — check official site | New York City, New York |
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| Selection and application | 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 | Application materials: Short essays, one-page resume, all high-school unofficial transcripts and no more than two STEM teacher/counselor/research-mentor letters. Do not contact faculty for placement; offer acceptance within three days. Publication/competition use requires PI permission. | Selection: GSTEM admits 40 current juniors. Review is competitive and considers academic work, essays, STEM activities, and one recommendation. Application materials: Four short essays; One recommendation from a teacher, advisor, or counselor; Separate data-science essay for Winston Data Scholarship consideration |
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| Official sources | Source 1 · checked 2026-08-20Source 2 · checked 2026-08-20Source 3 · checked 2026-08-20Source 4 · checked 2026-08-20 | Source 1 · checked 2026-10-09 | Source 1 · checked 2026-08-22Source 2 · checked 2026-08-22Source 3 · checked 2026-08-22Source 4 · checked 2026-08-22Source 5 · checked 2026-08-22Source 6 · checked 2026-08-20 |
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