Grossmont Union High
La Mesa, California · 16,738 students · 15 schools
Enrollment
16,738
Schools
15
Location
La Mesa, California
Schools in this district
Granite Hills HighEl Cajon, CA
2,398 students
Grossmont HighLa Mesa, CA
2,175 students
Valhalla HighEl Cajon, CA
1,911 students
El Capitan HighLakeside, CA
1,825 students
Santana HighSantee, CA
1,736 students
El Cajon Valley HighEl Cajon, CA
1,652 students
Monte Vista HighSpring Valley, CA
1,569 students
West Hills HighSantee, CA
1,532 students
Mount Miguel HighSpring Valley, CA
1,480 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 Grossmont 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.