Proof School

Proof School is a secondary school in San Francisco that offers a mathematics-focused liberal arts education. Currently, 135 students¹ in grades 6–12 are enrolled in Proof School for the academic year (2026-2027). The school was co-founded by Dennis Leary, Ian Brown, and Paul Zeitz, the chair of mathematics at University of San Francisco. The school opened in the fall of 2015 with 45 students¹ in grades 6–10. The curriculum is inspired by math circles, which emphasizes communication and working together to solve math problems.

Proof School is a secondary school in San Francisco that offers a mathematics-focused liberal arts education. Currently, 135 students in grades 6–12 are enrolled in Proof School for the academic year (2026-2027). The school was co-founded by Dennis Leary, Ian Brown, and Paul Zeitz, the chair of mathematics at University of San Francisco. The school opened in the fall of 2015 with 45 students in grades 6–10. The curriculum is inspired by math circles, which emphasizes communication and working together to solve math problems. ==Academics== Proof School is a full-curriculum day school that emphasizes communication, collaboration, and problem-solving. The school is accredited by Western Association of Schools and Colleges. The school year is divided into 4 blocks, each of which consists of 7–8 normal academic weeks and a build week. Each student has 5 courses: 4 morning courses that vary across grades, and a math class. The morning courses meet twice a week for 80 minutes per class. The math courses meet for two hours every day in the afternoon, with middle school students having two for one hour each. ==References==

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