Total enrollment
8,736
-703 (-7%) vs SY 2017-18
8 schools in San Mateo Union High
California · 8,736 students · 4 cities
From elementary through high school, San Mateo Union High runs 8 public K-12 campuses (8 high), with combined enrollment of about 8,736.
7-year change in San Mateo Union High
SY 2017-18 vs SY 2024-25School count
8
0 (0%) vs SY 2017-18
% White
24%
was 29%
% Hispanic
35%
was 31%
% Black
1%
was 1%
% Asian
29%
was 28%
Source: NCES Common Core of Data, enrollment-weighted demographic averages
| Name | City | Level | Grades | Enrollment |
|---|---|---|---|---|
| Aragon High | San Mateo | High | 09-12 | 1,658 |
| Hillsdale High | San Mateo | High | 09-12 | 1,585 |
| Burlingame High | Burlingame | High | 09-12 | 1,583 |
| San Mateo High | San Mateo | High | 09-12 | 1,557 |
| Mills High | Millbrae | High | 09-12 | 1,115 |
| Capuchino High | San Bruno | High | 09-12 | 1,061 |
| Peninsula High (Continuation) | Burlingame | High | 09-12 | 123 |
| The Bridge Academy | San Mateo | High | 10-12 | 54 |
About San Mateo Union High
Across 8 schools, San Mateo Union High educates about 8,736 students in California. By footprint it is a rural-scale district.
Per-school enrollment averages around 1,092 in this district, meaningfully above the California typical of 578.
Five-year track record. Combined enrollment now sits at 8,736 students, declined 7% from the 9,439 reported in SY 2017-18. On the demographic side, White enrollment moved from 29% to 24% over the same window.
On this page, the community for San Mateo Union High discusses open enrollment windows, redistricting talk, and busing logistics. Discussions cut across districts, schools, and grade levels.