| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Last year's cycle (2026): $899; 2027: Unconfirmed — check official site | 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 |
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| Financial aid | 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 | 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 |
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| Expenses and aid conditions | 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 | 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 |
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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 9–12 (provider uses rising grades) | Grades 8–12; Grade timing: Unconfirmed — check official site |
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| Additional eligibility | Ages 15–17; Requirement: For 2026, be a rising high-school sophomore, junior, or senior age 15-17; Requirement: Demonstrate academic performance, authentic media interest, and potential to benefit from and contribute to camp; Requirement: Be able to live in supervised shared university housing and remain on campus; Requirement: Submit original application responses without generative AI; Exclusion: Rising freshmen and current middle-school students were ineligible in 2026; Exclusion: Single rooms and alternative lodging were not permitted; Exclusion: Selection is competitive and the school cannot provide individual application feedback; Exclusion: The 2027 eligibility rules are not yet confirmed | 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 |
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| Session dates or duration | Catalog terms: 1 week; 2027: Unconfirmed — check official site | Catalog terms: 4 weeks; 2027: Unconfirmed — check official site | Catalog terms: 1–7 weeks; 2027: Unconfirmed — check official site |
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| Format | In person | In person | In person / Online / Hybrid |
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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 | Unconfirmed — check official site |
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| Location | Phoenix, Arizona, ASU Downtown Phoenix campus and Gordon Commons residence hall | 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 |
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| Selection and application | Selection: Applications are reviewed for academic performance and media interest, with current juniors sometimes prioritized because of demand. The 2026 acceptance rate and 2027 capacity are not published on the current page. | 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 |
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| Official sources | Source 1 · checked 2026-08-21Source 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 2026-08-22Source 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 |
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