San Mateo Union High
San Mateo, California · 8,942 students · 8 schools
Enrollment
8,942
Schools
8
Location
San Mateo, California
Schools in this district
Aragon HighSan Mateo, CA
1,740 students
Hillsdale HighSan Mateo, CA
1,629 students
San Mateo HighSan Mateo, CA
1,613 students
Burlingame HighBurlingame, CA
1,519 students
Mills HighMillbrae, CA
1,141 students
Capuchino HighSan Bruno, CA
1,091 students
Methodology & sources
- NCES Common Core of Data (CCD) directory
- U.S. Dept. of Education EDFacts assessment results
- California accountability framework (per-indicator). California publishes per-indicator dashboard ratings instead of a single rollup grade — this projection is a COSMIQ composite over math+ELA proficiency, not an official state rating. Cross-check the state dashboard for the per-indicator view. (as of 2026-05-27)
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Start learning free →About this profile. COSMIQ is an independent, free AI tutoring service and is not affiliated with, endorsed by, or sponsored by San Mateo Union High, California, or any government education agency. All figures are drawn from public U.S. Department of Education data (NCES Common Core of Data and EDFacts). Any projected rating is an independent estimate, not an official score. COSMIQ does not collect or publish user reviews or ratings of schools.
Data last refreshed July 7, 2026.