| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | February 5, 2027 (2027 cycle) |
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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 | Unconfirmed — check official site | Unconfirmed — check official site |
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| Stipend or pay | Unconfirmed — check official site | Unconfirmed — check official site | 2027 summer stipend: $1,200 (2027 cycle) |
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| Eligibility | Grades 9–12 (provider uses rising grades) | Unconfirmed — check official site | Grade 11 when applying; summer rising grade is one higher |
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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 | Requirement: Canada/USA Mathcamp is a residential advanced-mathematics programme for students worldwide, generally ages thirteen to eighteen. Applicants need precalculus or equivalent preparation and demonstrate creative mathematical reasoning through the Qualifying Quiz; calculus is not required. Detailed age exceptions apply.
The completed 2026 camp ran June 28-August 2 at Champlain College in Burlington. The 2027 dates and location will be announced in December, and no 2027 application deadline or fee is yet published. All application components and any aid request must follow the new cycle’s instructions.
The accepted 2026 base fee was $7,500, with need-blind admission and full demonstrated-need aid available to eligible applicants, including international students. These historical terms do not establish the new cycle’s fee or aid instructions. | Minimum age 16; Citizenship: Legally authorized to work in the United States.; Residency: New York, New Jersey or Connecticut, within 25 miles of MSK’s main Upper East Side campus.; Requirement: Current high-school junior with a science GPA of at least 3.5, age 16 by June 2027 and availability for the entire eight weeks. |
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| Session dates or duration | Catalog terms: 4 weeks; 2027: Unconfirmed — check official site | Unconfirmed — check official site | Starts June 29, 2027; Ends August 20, 2027 (2027 cycle) |
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| Format | In person | Unconfirmed — check official site | In person |
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| Housing and supervision | Residential. Supervision and housing details: Unconfirmed — check official site | 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 | Unconfirmed — check official site | 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 | Unconfirmed — check official site | Application materials: Short essays, one-page resume, all high-school unofficial transcripts and no more than two STEM teacher/counselor/research-mentor letters. Do not contact faculty for placement; offer acceptance within three days. Publication/competition use requires PI permission. |
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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 2026-10-09Source 2 · checked 2026-10-09Source 3 · checked 2026-10-09Source 4 · checked 2026-10-09Source 5 · checked 2026-08-22Source 6 · checked 2026-08-22Source 7 · checked 2026-08-22Source 8 · checked 2026-08-22 | Source 1 · checked 2026-10-09 |
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