| Application deadline | —Not published | —Not published | February 21, 2027 |
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| Cost | $5,793 | $790–$1,3202026 cycle | $2,498–$7,998 |
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| Financial aid | Need-based financial assistance for application and program costs. Based on family income, family size and available COSMOS resources. | 2026: Need-based financial aid (up to 100% of base tuition). Open to Bay Area students completing grades K-10 and returning 11th graders; does not cover transportation, textbooks, supplies or program fees; not available to extended-deadline applicants. | —Not published |
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| Expenses and aid conditions | Application fee. Non-refundable; fee waivers can be requested; Need-based financial assistance for application and program costs. Based on family income, family size and available COSMOS resources. | 2026: 2026 nonrefundable application fee: $60–$90. $60 for domestic students; $90 for students attending school outside the US; Need-based financial aid (up to 100% of base tuition). Open to Bay Area students completing grades K-10 and returning 11th graders; does not cover transportation, textbooks, supplies or program fees; not available to extended-deadline applicants. | Enrollment deposit: $600. Paid with the application to hold a space; Application fee: $99–$199. Rises to $149 after the 1st wave deadline and $199 after the 2nd wave deadline; Mandatory course supplement (Aerospace Engineering, Emergency Medicine, Forensic Science at UCLA): $250 |
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| Stipend or pay | —Not published | —Not published | —Not published |
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| Eligibility | Grades 9–12 (provider uses rising grades) | Grades 7–11 when applying; summer rising grade is one higher | Grades 9–12 |
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| Additional eligibility | 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) | Requirement: Open to students currently in grades 7–11 when applying; Requirement: Some courses have academic prerequisites; Requirement: Current 6th graders who attended ATDP before may apply for a small selection of courses with a very strong application | Requirement: Open to grades 9–12; Requirement: Have completed 8th grade by the program start date (students starting high school in the fall and spring graduates may enroll); Requirement: 3.0 GPA or local equivalent; Requirement: International students must show English proficiency |
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| Session dates or duration | 4 weeks | Starts June 22, 2026; Ends July 31, 2026; 4–6 weeks2026 cycle | Starts June 13, 2027; Ends August 6, 2027; 1–6 weeks |
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| Format | In person | In person / Online | In person |
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| Housing and supervision | Residential | Non-residential | Residential |
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| Location | Davis, Irvine, Los Angeles, Merced, San Diego, Santa Cruz, CA | Berkeley, CA | Los Angeles, Berkeley, San Diego, Santa Barbara, San Luis Obispo, Durham, Atlanta, New York City, Ann Arbor, Seattle, New Haven, Nashville, Oxford, CA, NC, GA, NY, MI, WA, CT, TN |
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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: Online application with one personal statement; One teacher recommendation (two recommended) | Selection: Applications are reviewed on academic preparation, materials and course fit as they become complete. Classes generally cap at 20-24 students; returning students receive early priority but are not guaranteed admission or first-choice placement. Application materials: Academic product or essay (at least 500 words) | Selection: Applicants were reviewed against grade, GPA and programme-fit requirements, with decisions normally in 5-7 business days. Capacity was course/session-specific and could close early; no applicant or acceptance totals are published. Application materials: English proficiency telephone interview or TOEFL/Cambridge score (international students) |
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| Official sources | Source 1 · checked Oct 24, 2026Source 2 · checked Oct 24, 2026Source 3 · checked Oct 24, 2026Source 4 · checked Aug 22, 2026Source 5 · checked Aug 22, 2026Source 6 · checked Aug 22, 2026Source 7 · checked Aug 20, 2026 | Source 1 · checked Oct 24, 2026Source 2 · checked Oct 24, 2026Source 3 · checked Oct 24, 2026Source 4 · checked Oct 24, 2026Source 5 · checked Aug 20, 2026 | Source 1 · checked Oct 24, 2026Source 2 · checked Oct 24, 2026Source 3 · checked Oct 24, 2026Source 4 · checked Oct 24, 2026Source 5 · checked Oct 24, 2026Source 6 · checked Oct 24, 2026Source 7 · checked Oct 24, 2026Source 8 · checked Oct 24, 2026Source 9 · checked Oct 24, 2026Source 10 · checked Oct 24, 2026Source 11 · checked Oct 24, 2026Source 12 · checked Oct 24, 2026Source 13 · checked Oct 24, 2026Source 14 · checked Oct 24, 2026Source 15 · checked Aug 22, 2026 |
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