| Application deadline | January 20, 2027 (2027 cycle) | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Unconfirmed — check official site | Unconfirmed — check official site | Last year's cycle (2026): $5,518; 2027: Unconfirmed — check official site |
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| Financial aid | Unconfirmed — check official site | Last year's cycle (2026): Need-based high-school assistance: Amount: Unconfirmed — check official site. Available after acceptance and reviewed rolling; award amount is not guaranteed.; 2027: Unconfirmed — check official site | Last year's cycle (2026): 2026 need-based application and program assistance: Up to $5,564. Could assist with the $46 application fee and $5,518 program cost based on family income, family size and available funds; actual award not guaranteed.; 2027: Unconfirmed — check official site |
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| Expenses and aid conditions | Last year's cycle (2026): Daily transportation reimbursement: Amount: Unconfirmed — check official site. Broad promises partial reimbursement but does not publish limits or eligible modes.; 2027: Unconfirmed — check official site | Last year's cycle (2026): High-school enrollment deposit: $300. Nonrefundable, due within two weeks of acceptance and credited to tuition under current payment policy.; Need-based high-school assistance: Amount: Unconfirmed — check official site. Available after acceptance and reviewed rolling; award amount is not guaranteed.; 2027: Unconfirmed — check official site | Last year's cycle (2026): 2026 COSMOS application fee: $46. Nonrefundable; pending fee-waiver review could change when or whether payment was required.; Credit-card transaction fee on program payments: Amount: Unconfirmed — check official site. Approximately 2.5% when paying program costs by credit card; application fee exempt.; 2026 need-based application and program assistance: Up to $5,564. Could assist with the $46 application fee and $5,518 program cost based on family income, family size and available funds; actual award not guaranteed.; Full-financial-aid attendance deposit: $200. Required only for admitted students offered full aid and refunded to the legal guardian after successful completion.; 2027: Unconfirmed — check official site |
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| Stipend or pay | Last year's cycle (2026): 2026 scholar stipend: $3,600; 2027: Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Eligibility | Grade 11; Grade timing: Unconfirmed — check official site | Grades 9–12 (provider uses rising grades) | Grades 9–12 (provider uses rising grades) |
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| Additional eligibility | Citizenship: U.S. citizen, lawful permanent resident, or non-U.S. citizen with employment authorization; Residency: Must attend a Massachusetts high school within daily commuting distance of Broad; Requirement: Apply as a current high-school junior/rising senior; Requirement: Earn B or better grades in science and mathematics; Requirement: Show enthusiasm for science; prior research is not required; Requirement: Attend the entire six-week program without other courses, programs, or employment during program hours; Exclusion: Out-of-state high-school students are ineligible even if they can commute or arrange housing; Exclusion: Students unable to attend every program day are ineligible | Requirement: Be a current high-school student or recent graduate eligible for the selected program; Requirement: Complete at least one high-school science and one high-school mathematics course; Requirement: Meet SEA essential-eligibility and medical-clearance requirements; Requirement: For SEA Expedition, be a rising sophomore through recent graduate under the 2026 rule; Requirement: For Pre-College Marine Biology, be a rising junior, senior or recent graduate under the 2026 rule; Exclusion: Rising freshmen are considered only for separately offered virtual programs; Exclusion: Eligibility differs by named program; Exclusion: No prior sailing experience was required for SEA Expedition; Exclusion: The current site has not announced a Summer 2027 high-school cycle; Exclusion: Participation does not guarantee credit, publication, recommendation or admission | Residency: Attend high school in person in California; Requirement: Be rising into grade 9, 10, 11 or 12 for the program fall year; Requirement: Attend high school in person in California; Requirement: Demonstrate academic excellence and preparation for the selected STEM cluster; Requirement: Complete cluster-specific course prerequisites; Requirement: Live on the host UC campus for the full program; Requirement: Be a first-time COSMOS participant; Exclusion: Students not attending a California high school in person; Exclusion: Students who previously attended any COSMOS program; Exclusion: Applicants outside the rising-grade 9-12 range; Exclusion: Applicants unable to live on campus for the full program; Exclusion: Late application, supporting, payment or admission materials; Exclusion: Assuming a 3.5 GPA is an absolute statewide minimum rather than the published typical profile |
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| Session dates or duration | Catalog terms: 6 weeks; 2027: Unconfirmed — check official site | Catalog terms: 2–3 weeks; 2027: Unconfirmed — check official site | Catalog terms: 4 weeks; 2027: Unconfirmed — check official site |
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| Format | In person | In person / Online | In person |
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| Housing and supervision | Non-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 | Cambridge, Massachusetts, Broad Institute; daily commute required from a Massachusetts high school community | Woods Hole, Woods Hole, Massachusetts; Cape Cod Bay and Gulf of Maine aboard SSV Corwith Cramer; virtual offerings when separately announced | Davis, California, Irvine, California, Los Angeles, California, Merced, California, San Diego, California, Santa Cruz, California, UC Davis, UC Irvine, UCLA, UC Merced, UC San Diego, UC Santa Cruz |
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| Selection and application | Selection: Applications receive holistic merit review based on coursework, extracurricular interests, science enthusiasm, teacher recommendations, and potential community contribution. Broad publishes recent cohort names but no current applicant count or acceptance rate. Application materials: Teacher recommendation material; the FAQ does not state the number | Selection: Programs have 20-25 places and use holistic review of academics, reference, motivation and goals. SEA Expedition and Pre-College applicants interview; admission and first-choice program are not guaranteed. Application materials: Short-answer essays; Admissions interview for SEA Expedition or Pre-College | 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: One personal statement; One required teacher recommendation, with two recommended |
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| Official sources | Source 1 · checked 2026-10-09Source 2 · checked 2026-08-21 | Source 1 · checked 2026-08-22Source 2 · checked 2026-08-22Source 3 · checked 2026-08-22Source 4 · checked 2026-08-22Source 5 · checked 2026-08-22 | 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 2026-08-22Source 7 · checked 2026-08-20 |
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