| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Last year's cycle (2026): $550; 2027: Unconfirmed — check official site | Last year's cycle (2026): $885–$12,135; 2027: Unconfirmed — check official site |
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| Financial aid | Last year's cycle (2026): Need-based SLIYS financial aid: Amount: Unconfirmed — check official site. Applicants requested consideration in Additional Comments; award amounts, budget, documentation, and guarantees were not published.; 2027: Unconfirmed — check official site | Last year's cycle (2026): Need-based Arts & Sciences scholarship: Amount: Unconfirmed — check official site. Available to domestic and international students; amount varies and excludes travel, books/supplies, personal costs, computer, and Wi-Fi.; 2027: Unconfirmed — check official site |
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| Expenses and aid conditions | Last year's cycle (2026): Accepted-scholar seat deposit: $25. Nonrefundable, due within two weeks of acceptance, and included in rather than added to the total tuition.; Need-based SLIYS financial aid: Amount: Unconfirmed — check official site. Applicants requested consideration in Additional Comments; award amounts, budget, documentation, and guarantees were not published.; 2027: Unconfirmed — check official site | Last year's cycle (2026): Selective Arts & Sciences program application fee: $50. Nonrefundable; waivable for listed financial-hardship criteria. Registration-only programs may not charge it.; Post-admission enrollment deposit: $500. Nonrefundable for Summer Launch, Institutes, and Summer Scholars and deducted from total cost.; Optional 2026 commuter lunch plan for Summer Scholars: $375. Residential Scholars pricing includes room and meals.; Need-based Arts & Sciences scholarship: Amount: Unconfirmed — check official site. Available to domestic and international students; amount varies and excludes travel, books/supplies, personal costs, computer, and Wi-Fi.; 2027: Unconfirmed — check official site |
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| Stipend or pay | Unconfirmed — check official site | Unconfirmed — check official site |
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| Eligibility | Grades 9–12; Grade timing: Unconfirmed — check official site | Grades 10–12; Grade timing: Unconfirmed — check official site |
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| Additional eligibility | Ages 13–18; Residency: High-school students worldwide who can attend all live Eastern Time sessions; Requirement: Enter grade 9, 10, 11, or 12 in the upcoming school year; Requirement: Show academic and personal readiness for competitive interactive linguistics study; 3.0 GPA is recommended, not required; Requirement: Attend all five live five-hour weekdays for each selected week; Requirement: Use a laptop or desktop, webcam, microphone, headphones or earbuds, reliable internet, and quiet room; Requirement: Complete SLIYS 1 before enrolling in SLIYS 2; Requirement: Have a parent or legal guardian participate in the application; Exclusion: Students outside the entering-grade and typical age range without specific SLIYS approval; Exclusion: SLIYS 2-only applicants who have not previously completed SLIYS 1; Exclusion: Students unable to attend live; recorded catch-up is prohibited; Exclusion: A GPA below 3.0 is not an automatic exclusion, and a GPA above 3.0 is not a guarantee; Exclusion: Prior language or linguistics study is not presented as a universal requirement | Citizenship: Domestic and international eligibility varies by program; Arts & Sciences accepts international applicants subject to English and immigration requirements; Residency: National/international for many academic programs; Residency: St. Louis-area residency required for several paid research and environmental programs; Residency: Rural eligibility required for Rural Scholars Academy; Requirement: Select a specific WashU program and meet its grade, academic, course, location, and schedule requirements; Requirement: Summer Scholars applicants are current juniors/rising seniors; Requirement: Summer Institute and Launch applicants generally enter grades 10-12 depending on program; Requirement: Course prerequisites apply to some credit-bearing offerings; Requirement: International applicants may need English-proficiency and visa documentation; Exclusion: No single grade, residence, price, or application rule covers the whole umbrella; Exclusion: Local internships and field programs may exclude non-St. Louis-area applicants; Exclusion: Participation does not guarantee WashU undergraduate admission or admissions advantage; Exclusion: Credit transfer and high-school-credit recognition are controlled by the receiving school |
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| Session dates or duration | Catalog terms: 1–2 weeks; 2027: Unconfirmed — check official site | Catalog terms: 1–8 weeks; 2027: Unconfirmed — check official site |
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| Format | Online | In person / Online / Hybrid |
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| Housing and supervision | Non-residential. Supervision and housing details: Unconfirmed — check official site | Unconfirmed — check official site |
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| Location | Worldwide live online participation aligned to Eastern Time | St. Louis, Missouri, Program-specific local field sites |
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| Selection and application | Selection: Admission is competitive and sessions can fill before the final deadline. Ohio State publishes no application count, admit rate, scoring rubric, class size by session, waitlist probability, or guarantee based on GPA. Application materials: One teacher recommendation for SLIYS 1 or 1-and-2 applicants; none for prior SLIYS 1 completers applying only to SLIYS 2 | Selection: Selectivity ranges from registration-based online courses to holistic selective residential programs and competitive paid research. WashU does not publish one umbrella application count, acceptance rate, capacity, waitlist, or rubric; each linked unit controls its process. Application materials: For selective Arts & Sciences programs: short essays, $50 fee or qualifying waiver, transcript, and one teacher recommendation; Separate local-residency, research, portfolio, financial, rural, or employment materials for other WashU programs |
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| Official sources | Source 1 · checked 2026-08-21Source 2 · checked 2026-08-21Source 3 · checked 2026-08-21Source 4 · checked 2026-08-21 | Source 1 · checked 2026-08-22Source 2 · checked 2026-08-22Source 3 · checked 2026-08-22Source 4 · checked 2026-08-22 |
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