| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Last year's cycle (2026): $2,400–$5,200; 2027: Unconfirmed — check official site | $5,793 (2027 cycle) | Unconfirmed — check official site |
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| Financial aid | Last year's cycle (2026): Need-based financial aid: Amount: Unconfirmed — check official site; 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) | Unconfirmed — check official site |
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| Expenses and aid conditions | Last year's cycle (2026): Deposit to secure a spot after acceptance: $1,000. Waived or adjusted when alternative arrangements or financial aid are awarded.; Need-based financial aid: Amount: Unconfirmed — check official site; 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) | 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 9–12 (provider uses rising grades) | Unconfirmed — check official site |
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| Additional eligibility | Requirement: Open to rising grades 9–12; Requirement: No prior engineering experience or STEM classes required | 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) | Ages 18–20 |
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| Session dates or duration | Last year's cycle (2026): Starts June 8, 2026; Ends August 7, 2026; 3–6 weeks; 2027: Unconfirmed — check official site | Catalog terms: 4 weeks; 2027: Unconfirmed — check official site | Catalog terms: 4 weeks; 2027: Unconfirmed — check official site |
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| Format | In person / Online | In person | 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 | Unconfirmed — check official site |
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| Location | San Jose, CA | Davis, Irvine, Los Angeles, Merced, San Diego, Santa Cruz, CA | Unconfirmed — check official site |
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| Selection and application | Selection: Application and interview review occur in receipt order while seats remain. BlueStamp does not publish applicant counts, acceptance rates, aid rates, cohort size for the next cycle, or a guaranteed decision. Application materials: Student interview with a parent or guardian present | 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) | Selection: Described by Weizmann as prestigious and intended for approximately 80 highly talented students worldwide; current acceptance rate is not published. Application materials: Historical applications have requested academic and science background, research interests, essays, transcript, recommendations, photograph, English proficiency, and medical or travel forms; confirm every item against the next application |
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| Official sources | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-08-20 | 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 | Source 1 · checked 2026-10-24Source 2 · checked 2026-08-21Source 3 · checked 2026-08-21Source 4 · checked 2026-08-21Source 5 · checked 2026-08-20 |
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