| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Last year's cycle (2026): $5,518; 2027: Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Financial aid | 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 | Unconfirmed — check official site |
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| Expenses and aid conditions | 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 | Catalog terms: ZooTeen program fee upon acceptance: $60. Nonrefundable; covers program materials, a camp T-shirt, and borrowing a Zoo uniform shirt. Contact the program if the fee creates economic hardship.; 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 | Grades 9–12 (provider uses rising grades) | Unconfirmed — check official site | Unconfirmed — check official site |
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| Additional eligibility | 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 13–17; Residency: No formal boundary is published; participants must reliably reach the Cincinnati Zoo for interviews, orientation, camp, and volunteer shifts; Requirement: Be age 13-17; the correct Summer 2027 reference date must be confirmed; Requirement: Show genuine interest in nature and conservation, curiosity, willingness to learn, positivity, and reliability; Requirement: Commit to 100 hours as a first-/second-year ZooTeen or 70 hours as a third-year/returning ZooTeen; Requirement: Be available for a full 40-hour camp week and required visitor-engagement/additional shifts; Requirement: Attend a group interview and complete guardian-assisted online/virtual and all-day in-person orientations; Requirement: Use email and an online profile to receive information and log service hours; Exclusion: The 2027 page's May 1, 2026 age-reference date is stale and must not be treated as the binding 2027 cutoff; Exclusion: The program cannot accept all applicants, and returning participation is not guaranteed; Exclusion: Advanced specializations require separate applications, experience, additional hours, and available capacity | Unconfirmed — check official site |
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| Session dates or duration | Catalog terms: 4 weeks; 2027: Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Format | In person | In person / Online | Unconfirmed — check official site |
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| Housing and supervision | Residential. Supervision and housing details: Unconfirmed — check official site | Non-residential. Supervision and housing details: Unconfirmed — check official site | Unconfirmed — check official site |
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| Location | 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 | Cincinnati, Cincinnati Zoo & Botanical Garden, Cincinnati, Ohio | Unconfirmed — check official site |
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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: One personal statement; One required teacher recommendation, with two recommended | Selection: The Zoo says the program is very popular and cannot accept all applicants; it publishes no applicant count, cohort size, or acceptance rate. Application materials: Six written essay responses about motivation, role models, conservation learning, challenge, personal growth, and intellectual curiosity; In-person group interview | Selection: Historical 2026 programme information: The official 2026 page said 85 accepted students and limited places, with nonselected applicants waitlisted; it did not publish applicant totals or an acceptance rate. |
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| Official sources | 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 2026-08-21 | Source 1 · checked 2026-10-10Source 2 · checked 2026-08-20 |
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