| Application deadline | Unconfirmed — check official site | March 1, 2027 (2027 cycle) | February 1, 2027 (2027 cycle) |
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| Cost | Unconfirmed — check official site | Unconfirmed — check official site | Free attendance; check separate expenses (2027 cycle) |
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| Financial aid | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Expenses and aid conditions | Unconfirmed — check official site | Unconfirmed — check official site | Unconfirmed — check official site |
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| Stipend or pay | Unconfirmed — check official site | Weekly salary: $500 (2027 cycle) | Unconfirmed — check official site |
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| Eligibility | Up to grade 12; Grade timing: Unconfirmed — check official site | Grade 12 and first-year college; Grade timing: Unconfirmed — check official site | Grades 10–11 when applying; summer rising grade is one higher |
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| Additional eligibility | Requirement: Open to grades up to 12; Requirement: Mathematical maturity of an advanced high-school student | Citizenship: US citizen; Residency: IL; Requirement: Open to grades 12–13; Requirement: High school senior in the 2027-2028 school year or a 2027 high school graduate; Requirement: Enrolled in an Illinois high school; Requirement: Proof of medical insurance | Residency: Texas high school students; Requirement: Open to students currently in grades 10–11 when applying; Requirement: Not enrolled in summer school during the program dates (full-time attendance required) |
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| Session dates or duration | Unconfirmed — check official site | Starts July 12, 2027; Ends August 6, 2027; 4 weeks (2027 cycle) | Starts June 6, 2027; Ends June 11, 2027; 1 week (2027 cycle) |
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| Format | Online | Hybrid | In person |
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| Housing and supervision | Non-residential. Supervision and housing details: Unconfirmed — check official site | Non-residential. Supervision and housing details: Unconfirmed — check official site | Residential. Supervision and housing details: Unconfirmed — check official site |
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| Location | Live online classes scheduled in Pacific time | IL | Austin, TX |
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| Selection and application | 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. | Application materials: Letter of recommendation from a STEM teacher or STEM club advisor | Application materials: Essay(s); One letter of recommendation |
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| Official sources | Source 1 · checked 2026-10-24Source 2 · checked 2026-10-24Source 3 · checked 2026-10-24Source 4 · checked 2026-08-20 | Source 1 · checked 2026-10-24 | Source 1 · checked 2026-10-24 |
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