| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | January 1, 2027 (2027 cycle) |
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| Cost | Unconfirmed — check official site | Last year's cycle (2026): $5,518; 2027: Unconfirmed — check official site | 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 | Unconfirmed — check official site |
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| Expenses and aid conditions | Last year's cycle (2026): Optional Bocconi housing, July 5-17, 2026: Amount: Unconfirmed — check official site. Single bedroom with shared bathroom; separate housing application.; 2027: 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 | 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 | Unconfirmed — check official site | Grades 9–12 (provider uses rising grades) | Unconfirmed — check official site |
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| Additional eligibility | Minimum age 15; Requirement: Be enrolled in the third-to-last or second-to-last year of high school in Italy or abroad; Requirement: Be at least 15 by the program start; Requirement: Be able to study and collaborate in English; Requirement: Provide the requested transcript and identity documents; Requirement: Arrange travel, meals, and any required immigration permission; Exclusion: Students outside the published two school-year stages; Exclusion: Students younger than 15 at the start; Exclusion: Participation is separate from and does not influence Bocconi bachelor admission; Exclusion: General 2026 capacity was sold out | 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 | Requirement: Be entering grade 10, 11, or 12 after the summer; Requirement: Demonstrate readiness and fit through a purpose statement, writing sample, transcript, and teacher/counselor recommendation; Requirement: Commit to the entire supervised residential program, community code, enrollment, health, and payment requirements; Exclusion: Current grade 12 graduates and students below the rising-10th-grade level are not listed as eligible; Exclusion: No college credit is awarded; Exclusion: Past international participation does not by itself confirm 2027 visa, age, guardian, insurance, or travel eligibility |
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| Session dates or duration | Catalog terms: 1–2 weeks; 2027: Unconfirmed — check official site | Catalog terms: 4 weeks; 2027: Unconfirmed — check official site | Starts June 20, 2027; Ends July 3, 2027; 2 weeks (2027 cycle) |
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| Format | In person | 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 | Residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | Milan, Lombardy | 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 | Portland |
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| Selection and application | Selection: Capacity is limited and the 2026 general program sold out. Bocconi does not publish an acceptance rate or selection formula. | 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: The director reviews complete applications. The program describes approximately 60 participants and workshops capped at 12, but applicant count, acceptance rate, scoring rubric, and waitlist policy are not published. Application materials: Application;300-word statement of purpose; writing sample no more than five pages; high-school transcript; teacher or counselor recommendation. |
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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 2026-10-12Source 2 · checked 2026-08-21Source 3 · checked 2026-08-21Source 4 · checked 2026-08-20 |
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