| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Last year's cycle (2026): $5,518; 2027: Unconfirmed — check official site | Last year's cycle (2026): $3,096–$17,935; 2027: Unconfirmed — check official site | Last year's cycle (2026): $6,450–$9,950; 2027: Unconfirmed — check official site |
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| Financial aid | 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 | Last year's cycle (2026): 2026 need-based and partner scholarship options: Amount: Unconfirmed — check official site. Limited and not guaranteed. No merit awards or 2026 international-student scholarships; eligibility varies by Sibley, PPSD, partner, or employee-dependent program.; 2027: Unconfirmed — check official site | Last year's cycle (2026): 2026 need-based tuition discount: Amount: Unconfirmed — check official site. 10-80% discount online or 10-50% San Francisco; no full rides; parents' prior 12 months of income statements required. 2027 availability TBC.; 2027: Unconfirmed — check official site |
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| Expenses and aid conditions | 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 | Last year's cycle (2026): 2026 application fee: $80. Nonrefundable; eligible applicants could request a fee waiver.; Enrollment deposit after admission: $500. Nonrefundable in most circumstances and required before enrolling in an available course; not described as an additional program fee.; 2026 need-based and partner scholarship options: Amount: Unconfirmed — check official site. Limited and not guaranteed. No merit awards or 2026 international-student scholarships; eligibility varies by Sibley, PPSD, partner, or employee-dependent program.; 2027: Unconfirmed — check official site | Last year's cycle (2026): 2026 enrollment deposit: $700. Nonrefundable, credited toward tuition, and due within 14 days of acceptance.; 2026 need-based tuition discount: Amount: Unconfirmed — check official site. 10-80% discount online or 10-50% San Francisco; no full rides; parents' prior 12 months of income statements required. 2027 availability TBC.; 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 9–12 (provider uses rising grades) | Grades 8–12; Grade timing: Unconfirmed — check official site | Grades 9–12; Grade timing: Unconfirmed — check official site |
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| Additional eligibility | 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 | Ages 13–18; Citizenship: Domestic and international students may apply, subject to program, visa, travel, and scholarship restrictions; Requirement: Meet the selected program/course age and completed-grade requirements; Requirement: Meet any course-specific prerequisite; Requirement: Demonstrate strong English proficiency for college-level academic and social participation; Requirement: Complete enrollment after admission while a suitable course still has space; Exclusion: Admission does not guarantee enrollment in a specific course or program; Exclusion: Most offerings are for ages 14-18/completed grades 9-12; STEM 9/10 extends to ages 13-15/completed grades 8-9; Exclusion: BELL, BEE, CRE, and Pre-Baccalaureate have narrower age/grade rules; Exclusion: Scholarship eligibility is narrower than general admission eligibility | Requirement: Be a high-school student/teen applicant; Requirement: Commit full time to the four-week program and team startup work; Requirement: Show interests, passions, initiative, drive, problem solving, and collaboration in the application; Requirement: No prior business or coding knowledge is required; Requirement: Residential students must live in program housing; no commuter option was offered in 2026; Exclusion: The current pages do not publish an exact age range, grade-by-grade rule, citizenship restriction, visa service, English-proficiency standard, or 2027 eligibility terms; Exclusion: A priority-list signup does not confer admission; Exclusion: Admission and financial aid are reviewed separately; no full-ride aid was offered in 2026 |
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| Session dates or duration | Catalog terms: 4 weeks; 2027: Unconfirmed — check official site | Catalog terms: 1–7 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 / Hybrid | In person / Online |
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| Housing and supervision | Residential. Supervision and housing details: Unconfirmed — check official site | Unconfirmed — check official site | Residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | 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 | Providence, Rhode Island, Anchorage, Alaska, Key Largo, Florida, Barcelona, Spain, Oxford, England, Online; Brown campus; domestic and international field sites depending on program | San Francisco, Berkeley, San Francisco Bay Area residential program hosted at UC Berkeley in 2026, Online worldwide |
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| Selection and application | 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 | Selection: Brown reviews applications holistically for academic performance, intellectual curiosity, motivation, maturity, and English proficiency. Admission is separate from course enrollment, which depends on eligibility and remaining capacity; no umbrella acceptance rate is published. Application materials: Optional supplementary essay; Recommendation form if chosen/requested; required for Pre-Baccalaureate and suggested in listed circumstances | Selection: Leangap reviews applicants for fit using motivation, initiative, collaboration, problem solving, skills, and impact. Each 2026 format was limited to 40 seats, but no applicant count or acceptance rate is published. Application materials: Parents' income statements for the prior 12 months when requesting need-based aid |
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| Official sources | 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 | Source 1 · checked 2026-10-10Source 2 · checked 2026-10-10Source 3 · checked 2026-10-10Source 4 · checked 2026-08-21Source 5 · checked 2026-08-21Source 6 · checked 2026-08-21 | Source 1 · checked 2026-08-21Source 2 · checked 2026-08-21Source 3 · checked 2026-08-21Source 4 · checked 2026-08-20 |
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