| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
|---|
| Cost | $2,500–$5,800 (2027 cycle) | $5,793 (2027 cycle) | Last year's cycle (2026): $3,096–$17,935; 2027: Unconfirmed — check official site |
|---|
| Financial aid | Limited financial aid: Amount: Unconfirmed — check official site. Apply with the Financial Aid Application. (2027 cycle) | 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) | Last year's cycle (2026): Need-based Sibley Scholarships: Amount: Unconfirmed — check official site. Awarded first-applied, first-awarded until funds are exhausted.; 2027: Unconfirmed — check official site |
|---|
| Expenses and aid conditions | Application fee: $70. Non-refundable.; Limited financial aid: Amount: Unconfirmed — check official site. Apply with the Financial Aid Application. (2027 cycle) | 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) | Last year's cycle (2026): Application fee: $80. Non-refundable; fee waivers available.; Enrollment deposit after admission: $500. Non-refundable.; Limited-coverage accident insurance (international students and uninsured U.S. students): $80; Need-based Sibley Scholarships: Amount: Unconfirmed — check official site. Awarded first-applied, first-awarded until funds are exhausted.; 2027: Unconfirmed — check official site |
|---|
| Stipend or pay | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
|---|
| Eligibility | Grades 7–12 (provider uses rising grades) | Grades 9–12 (provider uses rising grades) | Grades 8–12; Grade timing: Unconfirmed — check official site |
|---|
| Additional eligibility | Requirement: Open to rising grades 7–12; Requirement: Course minimums vary: Physics of the Electric Guitar is for rising 8th graders and older, Fun with DNA is for rising 7th and 8th graders, and the Piano Program is for intermediate and advanced pianists ages 11-18 | 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 13–18; Requirement: Open to grades 8–12; Requirement: Course choices depend on the student's age and grade level |
|---|
| Session dates or duration | Starts June 27, 2027; Ends July 24, 2027; 1–4 weeks (2027 cycle) | Catalog terms: 4 weeks; 2027: Unconfirmed — check official site | Catalog terms: 1–7 weeks; 2027: Unconfirmed — check official site |
|---|
| Format | In person | In person | In person / Online / Hybrid |
|---|
| 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 |
|---|
| Location | Lakeville, CT | Davis, Irvine, Los Angeles, Merced, San Diego, Santa Cruz, CA | Providence, Barcelona, Oxford, RI, AK, FL |
|---|
| Selection and application | Selection: Rolling, course-specific admission; Hotchkiss does not publish a program-wide acceptance rate. Application materials: Two teacher recommendations | 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: 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: Essay of 250 to 500 words; Optional supplementary essay; Recommendation (optional for most programs; required for Pre-Baccalaureate) |
|---|
| Official sources | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-10-24Source 5 · checked 2026-10-24Source 6 · checked 2026-10-24Source 7 · checked 2026-10-24Source 8 · checked 2026-10-24Source 9 · checked 2026-10-24Source 10 · checked 2026-10-24Source 11 · checked 2026-10-24Source 12 · checked 2026-08-21Source 13 · checked 2026-08-21 | 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 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-10-24Source 5 · checked 2026-10-24Source 6 · checked 2026-10-24Source 7 · checked 2026-10-24Source 8 · checked 2026-10-10 |
|---|