| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Last year's cycle (2026): $4,000; 2027: Unconfirmed — check official site | Last year's cycle (2026): $5,750; 2027: Unconfirmed — check official site | $5,793 (2027 cycle) |
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| Financial aid | Unconfirmed — check official site | Last year's cycle (2026): GSTEM need-based scholarship: Amount: Unconfirmed — check official site. Applies toward the program cost only.; Winston Data Scholarship (full program cost): Amount: Unconfirmed — check official site. Requires a separate data science essay; recipients take a weekly data science class.; 2027: Unconfirmed — check official site | Need-based financial assistance for application and program costs: Amount: Unconfirmed — check official site. Based on family income, family size and available COSMOS resources. (2027 cycle) |
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| Expenses and aid conditions | Last year's cycle (2026): Non-refundable registration fee: $50. Payable by check or wire transfer with the application.; Student Health Services fee (flat), listed with the room package: $66; Optional prepaid meal plan: $600. Refill-as-you-go is also possible.; 2027: Unconfirmed — check official site | Last year's cycle (2026): Optional six-week housing with meal plan: $3,966. Need-based aid does not cover housing.; NYU application fee: $50. Fee waivers are available.; GSTEM need-based scholarship: Amount: Unconfirmed — check official site. Applies toward the program cost only.; Winston Data Scholarship (full program cost): Amount: Unconfirmed — check official site. Requires a separate data science essay; recipients take a weekly data science class.; 2027: Unconfirmed — check official site | Application fee: Amount: Unconfirmed — check official site. Non-refundable; fee waivers can be requested.; Need-based financial assistance for application and program costs: Amount: Unconfirmed — check official site. Based on family income, family size and available COSMOS resources. (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 9–12; Grade timing: Unconfirmed — check official site | Grade 11 when applying; summer rising grade is one higher | Grades 9–12 (provider uses rising grades) |
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| Additional eligibility | Minimum age 16; Requirement: Open to grades 9–12; Requirement: At least 16 years old on or before July 4 of the program year, with no exceptions; Requirement: Unweighted GPA of 95/100 (3.8/4.0); Requirement: Standardized test scores (PSAT/SAT/ACT/AP/IB/Regents) at or above the 60th percentile; Requirement: At least three of English, Chemistry, Mathematics/Calculus, Physics and Biology; Requirement: International students must already hold documents to be legally present in the US for the program; no visa support | Citizenship: U.S. citizens (living anywhere); Citizenship: Non-citizens in the U.S. on an F-1 student visa; Requirement: Open to students currently in grade 11 when applying; Requirement: High aptitude in STEM; Requirement: Available for every day of the six-week program and not enrolled in another program at the same time | Residency: California high school students only; Requirement: Open to rising grades 9–12; Requirement: Demonstrated academic excellence (a typical COSMOS student has a GPA of 3.5 or above) |
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| Session dates or duration | Last year's cycle (2026): Starts June 24, 2026; Ends August 7, 2026; 7 weeks; 2027: Unconfirmed — check official site | Starts June 28, 2027; Ends August 6, 2027; 6 weeks (2027 cycle) | Catalog terms: 4 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 | Non-residential. Supervision and housing details: Unconfirmed — check official site | Residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | Stony Brook, NY | New York, NY | Davis, Irvine, Los Angeles, Merced, San Diego, Santa Cruz, CA |
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| Selection and application | Selection: Non-rolling review after the deadline using demanding age, GPA, test, coursework, transcript, recommendation, leadership, and application criteria. Application materials: Three letters of recommendation, one from a science teacher, submitted by the writers | Selection: GSTEM admits 40 current juniors. Review is competitive and considers academic work, essays, STEM activities, and one recommendation. Application materials: Four essays; One letter of recommendation from a teacher, advisor or counselor | Selection: Each of six campuses accommodates roughly 160-200 students, and clusters typically enroll 20-25 with a commonly reported 5:1 student-to-faculty ratio. Admissions are competitive and based on academic merit relative to the selected topic, but applicant count and statewide acceptance rate were not published. Application materials: Online application with one personal statement; One teacher recommendation (two recommended) |
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| Official sources | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-10-24Source 5 · checked 2026-10-09Source 6 · checked 2026-08-22Source 7 · checked 2026-08-22Source 8 · checked 2026-08-22 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-10-24Source 5 · checked 2026-08-22Source 6 · 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 2026-08-22Source 7 · checked 2026-08-20 |
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