San Mateo Union High School District
- Aragon High School — San Mateo; 77th of 2,162 California high schools in SchoolDigger’s 2025 rankings, with about 1,660 students.
- San Mateo High School — the city’s namesake campus, and the source of one of the strongest ACT results in Michael’s files.
- Burlingame High School — the district’s highest-ranked campus in 2025, at 73rd in the state.
- Hillsdale High School — San Mateo; students move through small learning communities named for medieval centers of learning, staying with one set of core teachers for two years at a time.
- Mills High School — Millbrae; the smallest of the district’s comprehensive campuses and consistently among the state’s top hundred.
- Capuchino High School — San Bruno; the district’s most economically varied campus, where the UC and CSU question below matters most.
Sequoia Union High School District
- Carlmont High School — Belmont; 55th in California in 2025 and the largest school on this list at roughly 2,360 students.
- Sequoia High School — Redwood City; an authorized International Baccalaureate Diploma Programme school, and one of the widest college ranges on this list.
- Woodside High School — Woodside; Mr. Test Prep students here span the classes of 2008 through 2021, with results at Berkeley, UCLA and UC San Diego.
Independent and Catholic schools
- Crystal Springs Uplands School — Hillsborough; three full-time college counselors, all former admission officers, and a published testing timeline that starts with diagnostics on both tests.
- The Nueva School — San Mateo; a school for gifted students that gives no letter grades and offers no AP courses, which quietly makes a test score one of the few standardized numbers on the application.
- Notre Dame High School, Belmont — all-girls Catholic school of about 445 students, founded 1851 and in Belmont since 1923.
- Mercy High School, Burlingame — all-girls Catholic school founded 1931, in the Kohl Mansion; shares Tri-School classes with Notre Dame and Serra.
