| Application deadline | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Cost | Last year's cycle (2026): $7,208; 2027: Unconfirmed — check official site | Catalog terms: Free attendance; check separate expenses; 2027: Unconfirmed — check official site | Unconfirmed — check official site |
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| Financial aid | Last year's cycle (2026): Need-based financial aid and travel grants: Amount: Unconfirmed — check official site. Free for domestic students with household income under $85,000; case-by-case awards above that and for international students.; 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): Application: $0. Applying is free.; Need-based financial aid and travel grants: Amount: Unconfirmed — check official site. Free for domestic students with household income under $85,000; case-by-case awards above that and for international students.; 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 | Unconfirmed — check official site |
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| Eligibility | Grades 9–12; Grade timing: Unconfirmed — check official site | Grades 10–12 (provider uses rising grades) | Up to grade 12; Grade timing: Unconfirmed — check official site |
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| Additional eligibility | Requirement: Open to grades 9–12; Requirement: Must not have already graduated from high school; Requirement: Most participants have just finished 10th or 11th grade; students who just completed 9th grade with more advanced math have attended; Requirement: International students are welcome to apply | Residency: GA; Requirement: Open to rising grades 10–12; Requirement: Live in the state of Georgia | Requirement: Open to grades up to 12; Requirement: Mathematical maturity of an advanced high-school student |
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| Session dates or duration | Last year's cycle (2026): Starts June 28, 2026; Ends August 8, 2026; 6 weeks; 2027: Unconfirmed — check official site | Last year's cycle (2026): Starts June 7, 2026; Ends June 12, 2026; 1 week; 2027: Unconfirmed — check official site | Unconfirmed — check official site |
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| Format | In person | In person | Online |
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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 | Non-residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | New residential campus for 2027 is not announced; Amherst, Massachusetts was the historical 2026 location | Milledgeville, GA | Live online classes scheduled in Pacific time |
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| Selection and application | Selection: Application review uses the form, letter, Interesting Test, and mathematical sponsor recommendation; no current acceptance rate or 2027 capacity is published. Application materials: Letter of recommendation from a sponsor who knows you in a mathematical context | Selection: Historical 2026 programme information: The official 2026 page said 85 accepted students and limited places, with nonselected applicants waitlisted; it did not publish applicant totals or an acceptance rate. Application materials: Recommendation Form from a teacher or supervisor (students new to 21st Century Leaders) | Selection: Applicants must persuade Euler Circle that they are prepared and a good instructional fit; Euler Circle says ordinary seat scarcity usually is not the main constraint and does not publish acceptance statistics. |
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| Official sources | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-10-24 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24 | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-08-20 |
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