| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | January 20, 2027 (2027 cycle) |
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| Cost | Catalog terms: Free attendance; check separate expenses; 2027: Unconfirmed — check official site | $5,793 (2027 cycle) | Unconfirmed — check official site |
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| Financial aid | Catalog terms: Application fee waiver: Amount: Unconfirmed — check official site. For students eligible for Free & Reduced Lunch or who qualify for financial aid.; 2027: Unconfirmed — check official site | Need-based financial assistance for application and program costs: Amount: Unconfirmed — check official site. Based on family income, family size and available COSMOS resources. (2027 cycle) | Unconfirmed — check official site |
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| Expenses and aid conditions | Catalog terms: Non-refundable application processing fee: $40. Waived for students eligible for Free & Reduced Lunch or who qualify for financial aid.; Application fee waiver: Amount: Unconfirmed — check official site. For students eligible for Free & Reduced Lunch or who qualify for financial aid.; 2027: Unconfirmed — check official site | Application fee: Amount: Unconfirmed — check official site. Non-refundable; fee waivers can be requested.; Need-based financial assistance for application and program costs: Amount: Unconfirmed — check official site. Based on family income, family size and available COSMOS resources. (2027 cycle) | Last year's cycle (2026): Daily transportation reimbursement: Amount: Unconfirmed — check official site. Broad promises partial reimbursement but does not publish limits or eligible modes.; 2027: Unconfirmed — check official site |
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| Stipend or pay | Catalog terms: Learning stipend based on total internship hours: $500–$1,500; 2027: Unconfirmed — check official site | Unconfirmed — check official site | Last year's cycle (2026): 2026 scholar stipend: $3,600; 2027: Unconfirmed — check official site |
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| Eligibility | Grades 10–12 (provider uses rising grades) | Grades 9–12 (provider uses rising grades) | Grade 11; Grade timing: Unconfirmed — check official site |
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| Additional eligibility | Residency: Reside in the United States throughout the program; Residency: Live within 50 miles of the internship position, or with adult family or friends near it for the summer; Requirement: Open to rising grades 10–12; Requirement: Have not held an ASE internship before; Requirement: Interest in a math or science career and readiness for a professional environment; Requirement: Reliable transportation to the internship location; Requirement: Proof of health insurance; Requirement: Mentor may not be a family member | Residency: California high school students only; Requirement: Open to rising grades 9–12; Requirement: Demonstrated academic excellence (a typical COSMOS student has a GPA of 3.5 or above) | Citizenship: U.S. citizen, lawful permanent resident, or non-U.S. citizen with employment authorization; Residency: Must attend a Massachusetts high school within daily commuting distance of Broad; Requirement: Apply as a current high-school junior/rising senior; Requirement: Earn B or better grades in science and mathematics; Requirement: Show enthusiasm for science; prior research is not required; Requirement: Attend the entire six-week program without other courses, programs, or employment during program hours; Exclusion: Out-of-state high-school students are ineligible even if they can commute or arrange housing; Exclusion: Students unable to attend every program day are ineligible |
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| Session dates or duration | Catalog terms: 4–10 weeks; 2027: Unconfirmed — check official site | Catalog terms: 4 weeks; 2027: Unconfirmed — check official site | Catalog terms: 6 weeks; 2027: Unconfirmed — check official site |
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| Format | In person / Hybrid | In person | In person |
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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 | Portland, Corvallis, OR | Davis, Irvine, Los Angeles, Merced, San Diego, Santa Cruz, CA | Cambridge, Massachusetts, Broad Institute; daily commute required from a Massachusetts high school community |
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| Selection and application | Selection: Competitive: more than 400 applicants for fewer than 100 positions, with roughly 75 internships typically offered. Matching also depends on position prerequisites and mentor rankings. Application materials: Two adult recommendations; Interview with some mentors | 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: Online application with one personal statement; One teacher recommendation (two recommended) | Selection: Applications receive holistic merit review based on coursework, extracurricular interests, science enthusiasm, teacher recommendations, and potential community contribution. Broad publishes recent cohort names but no current applicant count or acceptance rate. Application materials: Teacher recommendation material; the FAQ does not state the number |
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| Official sources | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-10-24Source 5 · checked 2026-10-24Source 6 · checked 2026-08-20 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 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 2026-08-21 |
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