| 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 | Last year's cycle (2026): $2,700; 2027: 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 | Last year's cycle (2026): Fall 2026 required activities, health, and technology fees: $168. USD 100 activities + USD 32 health service + USD 36 technology.; Nonrefundable Pre-College application fee: $80. Returning applicants may qualify for a waiver under the published policy.; Academic Year Weekend enrollment deposit: $500. Nonrefundable but credited to program cost; due date is communicated with admission.; 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 |
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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; Grade timing: 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 | Residency: Academic Year Weekend is open to students worldwide; Residency: In-person summer housing and supervision rules vary by program; Requirement: Academic background, motivation, and maturity sufficient for rigorous study; Requirement: Completion of any prerequisites on the selected course page; Requirement: English fluency adequate for fast-paced discussion and assignments without translation assistance; Requirement: Technology and schedule compatible with synchronous Eastern Time online classes for Academic Year Weekend; Exclusion: Participation does not confer an advantage in Columbia undergraduate admission; Exclusion: Academic Year Weekend and standard Pre-College courses are noncredit | 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 |
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| Session dates or duration | Catalog terms: 4 weeks; 2027: Unconfirmed — check official site | Catalog terms: 7 weeks; 2027: Unconfirmed — check official site | Unconfirmed — check official site |
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| Format | In person | In person / Online | In person / Online |
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| Housing and supervision | Residential. Supervision and housing details: Unconfirmed — check official site | Residential. Supervision and housing details: Unconfirmed — check official site | Non-residential. Supervision and housing details: 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 | New York City, Academic Year Weekend is online worldwide; summer programs can be online, NYC commuter, or NYC residential | Cincinnati, Cincinnati Zoo & Botanical Garden, Cincinnati, Ohio |
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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: Holistic admission seeks academically exceptional, curious, motivated, and mature students. Columbia publishes no current applicant or admit rate and no fixed GPA minimum. Application materials: One recommendation form from a current teacher in a field related to the applicant's curricular preferences; For NYC Residential or Commuter Summer only, an additional current school counselor/administrator recommendation | 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 |
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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 2026-08-21Source 2 · checked 2026-08-21Source 3 · checked 2026-08-21Source 4 · checked 2026-08-21Source 5 · checked 2026-08-20Source 6 · checked 2026-08-20 | Source 1 · checked 2026-08-21 |
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