| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Last year's cycle (2026): $2,000–$5,800; 2027: 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): Summer 2026 application fee: $70. Nonrefundable.; Honors enrollment deposit: $1,000. Nonrefundable and due within two weeks of the 2026 admission decision.; 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 | Grades 10–12 (provider uses rising grades) | Grades 9–12 (provider uses rising grades) | Grades 8–11 (provider uses rising grades) |
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| Additional eligibility | Ages 15–18; Requirement: Two-week pathway: be a rising sophomore, junior, or senior and age 15-18 under the cycle's exact boundary dates; Requirement: Honors pathway: be a rising senior graduating in the stated following year with GPA 3.5 or higher; Requirement: Meet the selected course's academic and delivery requirements; Requirement: International applicants using English as a second language must meet the pathway's test threshold or approved English-medium-school waiver; Exclusion: Students cannot apply to or attend both the Two-Week and Honors pathways in the same cycle; Exclusion: The 2026 noncredit program excluded students younger than 15 on June 28 or turning 19 by August 7; Exclusion: Honors was limited to rising seniors and online delivery; Exclusion: Program acceptance does not guarantee Boston College undergraduate admission | 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 a rising grade 9, 10, 11, or 12 student for the relevant summer cycle; Requirement: Have limited or no prior exposure to Chinese; Requirement: Be able to complete synchronous virtual pre-camp, the full residential component in Boone, and synchronous/asynchronous virtual post-camp work; Requirement: For the completed 2026 cycle, submit the online form and 150-200-word statement of interest while space remained; Exclusion: The 2026 session is complete and the stale form/page must not be used as a current application; Exclusion: Students seeking an advanced-Chinese program were not the target audience; Exclusion: Priority for Southern Appalachia was not stated as a universal residency guarantee or automatic admission; Exclusion: No applicant was guaranteed one of the 18 places, proficiency benchmark, college credit, placement, or home-school recognition |
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| Session dates or duration | Catalog terms: 2–6 weeks; 2027: Unconfirmed — check official site | Catalog terms: 4 weeks; 2027: Unconfirmed — check official site | Unconfirmed — check official site |
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| Format | In person / Online | In person | Hybrid |
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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 | Residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | Chestnut Hill, Massachusetts, Greater Boston | 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 | Boone, North Carolina, Priority consideration: Southern Appalachia, especially western North Carolina and east Tennessee |
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| Selection and application | Selection: Seats were limited and complete applications were reviewed for academic readiness. Honors required at least a 3.5 GPA; no acceptance rate is published. Application materials: Two letters of recommendation; Two-week: statement of purpose and course-specific essay; Honors: 250-500-word program and course essay and one or two course selections | 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: Rolling admission to 18 places, with priority for Southern Appalachian students, especially western North Carolina and east Tennessee. No application count, acceptance rate, rubric, waitlist rule, or decision timeline is published. Application materials: 150-200-word statement of interest explaining why the student wants to participate |
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| Official sources | Source 1 · checked 2026-08-21Source 2 · checked 2026-08-21Source 3 · checked 2026-08-21Source 4 · checked 2026-08-21Source 5 · checked 2026-08-20 | 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 2026-08-20 |
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