Grossmont Union High School District
School District · La Mesa, California
Avg Rating
5.5
out of 10
Schools
15
15 high
Per-Pupil Spending
$18,399
Student-Teacher Ratio
134.7:1
Avg Rating
5.5
out of 10
Schools
15
15 high
Per-Pupil Spending
$18,399
Student-Teacher Ratio
134.7:1
Evaluating Grossmont Union High?
A district shares budget, policy, and attendance zones across its schools — use this page to judge Grossmont Union High as a whole, then compare how its individual schools differ.
Shortlist starter
Start with these real page-level signals, then use the full table and map below.
Grossmont Middle College High
EL Cajon · High. Compare this profile against district averages, level fit, and attendance-zone reality below.
Chaparral High
EL Cajon · High. Compare this profile against district averages, level fit, and attendance-zone reality below.
Valhalla High
EL Cajon · High. Compare this profile against district averages, level fit, and attendance-zone reality below.
How this district compares
California rank
#534 of 713
districts by avg. composite
Vs. state average
-0.8
below California avg
Per-pupil spending
$18,399
+$752 vs California median
District size
16,566 students
Much larger than California median
The short answer
Grossmont Union High ranks #534 of 713 California districts by overall school rating. Grossmont Union High's schools with real test data average 5.5/10 across 14 schools. Its top-rated schools are Grossmont Middle College High (9.2/10), Chaparral High (6.6/10), and Valhalla High (5.9/10). Schools with estimated (proxy) scores are excluded from this ranking.
Rates 9.2/10 despite 37% of students being economically disadvantaged. That's about 2.5 points higher than its student-poverty level predicts. Roughly as clean a case of strong results without an affluent-ZIP price tag as you'll find among Grossmont Union High schools.
Top-Rated Schools in Grossmont Union High
Ranked by MySchoolScout composite rating using only schools with real test data (14 of 15). "Value" = points above what student poverty predicts. Estimated (proxy) scores are excluded.
| # | School | Rating |
|---|---|---|
| 1 | Grossmont Middle College High | 9.2 / 10 |
| 2 | Chaparral High | 6.6 / 10 |
| 3 | Valhalla High | 5.9 / 10 |
| 4 | Granite Hills High | 5.4 / 10 |
| 5 | Grossmont High | 5.4 / 10 |
| 6 | Monte Vista High | 5.4 / 10 |
| 7 | West Hills High | 5.4 / 10 |
| 8 | Santana High | 5.3 / 10 |
| 9 | EL Capitan High | 5.2 / 10 |
| 10 | Elite Academy | 5.1 / 10 |
See all 15 schools — including those with estimated data — in the full directory below. How we rate schools.
About Grossmont Union High
Grossmont Union High is a La Mesa, California school district serving 15 schools. The district educates 16,566 students with a student-teacher ratio of 134.7:1. The district invests $18,399 per student annually.
With an average rating of 5.5/10, Grossmont Union High demonstrates solid academic performance.
The highest-rated school in the district is Grossmont Middle College High, which has a composite score of 9.2/10.
In standardized testing, Grossmont Union High students show an average math proficiency of 37.1% and ELA proficiency of 51.9%.
The district includes 15 high schools.
District Map
Schools in Grossmont Union High, colored by MySchoolScout rank. Click a pin for details.
District Average Test Scores
Average proficiency across all schools in Grossmont Union High with test data.
Schools in Grossmont Union High
15 schools High Schools 15
District Details
- State
- California
- City
- La Mesa
- Total Enrollment
- 16,566
- Teachers (FTE)
- 123
- Child Poverty Rate
- 0.1%
- Data Year
- 2023
Frequently Asked Questions
How many schools are in Grossmont Union High?
Grossmont Union High has 15 schools in total — 15 high schools. You can explore each school's ratings and details on this page.
What is the average rating for Grossmont Union High?
The average composite rating for Grossmont Union High is 5.5/10. This score is calculated from the individual ratings of all schools with academic data in the district.
What is the per-pupil spending in Grossmont Union High?
Grossmont Union High spends $18,399 per student per year.
What is the student-teacher ratio in Grossmont Union High?
The average student-teacher ratio in Grossmont Union High is 134.7:1.
What is the top-rated school in Grossmont Union High?
Grossmont Middle College High is the highest-rated school in Grossmont Union High with a composite score of 9.2/10.
What are the test scores in Grossmont Union High?
Across schools in Grossmont Union High with test data, the average math proficiency is 37.1% and the average ELA (reading/writing) proficiency is 51.9%. These figures represent the percentage of students meeting or exceeding grade-level standards.
How does Grossmont Union High compare to other districts in California?
Grossmont Union High has an average school rating of 5.5/10 across 15 schools. Families can compare this to other districts in California by visiting individual district pages. Factors like school size, available programs, and community demographics also play a role in choosing the right fit.
How does MySchoolScout rate schools?
MySchoolScout ratings blend student growth, poverty-adjusted academic performance, and learning environment — plus college readiness for high schools. Weights vary by school level, and equity data is shown for context without being factored into the score. Learn more about our rating system on our methodology page.
District Averages
- Overall Rating
- 5.5/10
- Math Proficiency
- 37.1%
- ELA Proficiency
- 51.9%
Resources
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateOther School Districts in CA
Compare Grossmont Union High with neighboring districts in the state.
- Los Angeles Unified (785)
- San Diego Unified (175)
- San Francisco Unified (113)
- Fresno Unified (101)
- Long Beach Unified (82)
- Oakland Unified (82)
- San Bernardino City Unified (76)
- Sacramento City Unified (73)
- San Juan Unified (68)
- Elk Grove Unified (67)
- Garden Grove Unified (66)
- Capistrano Unified (59)
- West Contra Costa Unified (54)
- Stockton Unified (54)
- Corona-norco Unified (53)
- Mt. Diablo Unified (52)
- Santa Ana Unified (52)
- Clovis Unified (50)
- Lodi Unified (49)
- Riverside Unified (49)
- Bakersfield City (45)
- Irvine Unified (45)
- Fontana Unified (44)
- Fremont Unified (44)
Data from NCES Common Core of Data, California Dept. of Education, and U.S. Census ACS for the 2023–24 school year. Rankings computed by MySchoolScout. See all data sources.
Related reading
- Best Elementary Schools in America: 2026 Rankingsbest schools
- Best Public Schools in California 2026: Top-Ranked Elementary, Middle & High Schoolsbest schools
- Best School Districts to Move To in 2026: A Data-Driven Guidebest schools
- Best Schools in Los Angeles, CA — 2026 Rankingsbest schools
- Best Schools in San Diego, CA — 2026 Rankingsbest schools
Get school insights in your inbox
New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.
We respect your privacy. Unsubscribe at any time.