| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Last year's cycle (2026): $1,695–$2,195; 2027: Unconfirmed — check official site | Last year's cycle (2026): $5,518; 2027: Unconfirmed — check official site | Last year's cycle (2026): Free attendance; check separate expenses; 2027: Unconfirmed — check official site |
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| Financial aid | Last year's cycle (2026): 2026 qualifying competition-achievement discount: $100. One $100 completion-paid discount with proof for specified MATHCOUNTS National, USAJMO or USAMO achievements.; 2027: 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): 2026 standard online placement test: $50–$100. Students not recently enrolled generally tested; scheduled-session fee rose closer to summer and was nonrefundable and nontransferable. A special session could cost $150.; 2026 qualifying competition-achievement discount: $100. One $100 completion-paid discount with proof for specified MATHCOUNTS National, USAJMO or USAMO achievements.; 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 | Last year's cycle (2026): Fleischer Scholars application: $0. No fee is stated.; 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 4–12; Grade timing: Unconfirmed — check official site | Grades 9–12 (provider uses rising grades) | Grade 11; Grade timing: Unconfirmed — check official site |
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| Additional eligibility | Requirement: Be a rising fourth- through twelfth-grader for Math Challenges or a seventh- through twelfth-grader for Advanced Studies; Requirement: Provide accurate age, grade, math-course and official contest-score history; Requirement: Take an assigned placement test unless exempt as a recent IDEA MATH student; Requirement: Accept the academic team's final course placement; Requirement: Attend all live Eastern-time Zoom classes with camera and microphone on; Requirement: Complete homework and present mathematical solutions in class; Exclusion: The two summer tracks have different grade ranges, dates, course levels and prices; Exclusion: Registration alone does not complete enrollment; tuition must be paid in full; Exclusion: A preferred course is not guaranteed because placement, enrollment, staffing and capacity control offerings; Exclusion: Only enrolled students may enter the live Zoom classroom, and recording or photography is prohibited | 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: Attend an Arizona high school as a junior; Requirement: Be an Arizona high-school junior during the application cycle; Requirement: Demonstrate leadership, community service and academic effort; Requirement: Explain hardship/learning mindset in a short response; Requirement: Be ready for virtual participation and mentor engagement under the current model; Exclusion: The program is not a general national pre-college business camp; Exclusion: Financial need and first-generation status are selection factors, not stated absolute eligibility cutoffs; Exclusion: Historical residential or college-credit features are not promised for the next cohort |
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| Session dates or duration | Last year's cycle (2026): Starts June 28, 2026; Ends August 11, 2026; 5–6.43 weeks; 2027: Unconfirmed — check official site | Catalog terms: 4 weeks; 2027: Unconfirmed — check official site | Catalog terms: 1 week; 2027: Unconfirmed — check official site |
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| Format | Online | In person | Online |
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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 | Non-residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | Live online in U.S. Eastern Time | 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 | Arizona eligibility; remote 2026 programming with ASU/W. P. Carey staff and mentors |
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| Selection and application | Selection: Placement is academic and capacity-limited rather than governed by a published acceptance rate. Likely class sizes were 6-12 in early prealgebra levels and 6-16 in others, with stated caps of 16 or 20. | 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: ASU says places are limited and considers leadership/service, academics, financial need and first-generation status. No current cohort size, applicant count or acceptance rate is published. Application materials: Optional teacher or other academic-professional recommendation |
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| Official sources | Source 1 · checked 2026-08-22Source 2 · checked 2026-08-22Source 3 · checked 2026-08-20 | 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 2026-08-21 |
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