Average
#6576 of 9,539 schools in CA
Grossmont High
High School · Grossmont Union High
PO Box 1043, La Mesa, CA 91944
Enrollment
2,079
Student-Teacher
346.5:1
Score
5.4
Grades
9th – 12th
Enrollment
2,079
Student-Teacher
346.5:1
Score
5.4
Grades
9th – 12th
Data vintage
2022-23
Data vintage2022-23
How this school compares
California schools
#6,576 of 9,539
In La Mesa
#15 of 27
public schools
In district
#5 of 14
Grossmont Union High
Academic performance
7.4 / 10
Very Good
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Grossmont High
High School in La Mesa · grades 9th – 12th. Start here, then compare fit against nearby and district options.
Northmont Elementary
0.7 mi away. Use as a geographic alternative in the same move search.
Mt Helix Academy - Tiee
0.8 mi away. Use as a geographic alternative in the same move search.
About Grossmont High
Grossmont High is a public high school in La Mesa, CA, part of Grossmont Union High. Grossmont High serves approximately 2,079 students, and covers grades 9th-12th, and has a 346.5:1 student-teacher ratio. Grossmont High has a current MySchoolScout rating of 5.4 out of 10 and ranks #6,576 of 9,539 schools in CA.
Structured state assessment records for Grossmont High show 42% math proficiency (multi-year average, 2009-2024) and 62% reading/ELA proficiency (multi-year average, 2009-2024).
- This school 5.4 · Average
- District avg 5.5
- CA avg 6.5
What Parents Should Know
Grossmont High is a large school: 2,079 students. Size usually brings more course choices and activities than a smaller school can staff, but kids can also blend into the crowd. Ask how the school keeps students known and supported.
Grossmont High runs 346.5:1 students to teachers, above the national average. That often means bigger classes. Ask how the school supports kids who need extra help, and whether there are teaching assistants or small-group time.
Score Breakdown
Full Profile · 4/4 metricsView breakdown
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Grossmont High — Students at Grossmont High score 42% proficient, which is above what's typical for similar communities (expected: 39%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
63.5%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 30 test records from CA state assessments. About our data
Proficiency Trend
→ StableAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 7.1/10.
How Grossmont High Compares
See how Grossmont High performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more
Location
PO Box 1043, La Mesa, CA 91944
Nearby Alternatives
Families considering Grossmont High may also want to explore other high schools in the area. JCS - Manzanita (rated 8.6/10, 1.6 miles away), which scores notably higher. Another option is MT HELIX ACADEMY - TIEE (rated 7.7/10, 0.8 miles away), which scores notably higher. Additionally, MT. HELIX ACADEMY (rated 7.4/10, 0.8 miles away), which scores notably higher. For more schools in La Mesa, see our La Mesa schools guide .
Nearby Schools
20 within 2.2 mi| School | Distance | Rating |
|---|---|---|
| Northmont Elementary La Mesa | 0.7 mi | 4.4 |
| MT HELIX ACADEMY - TIEE La Mesa | 0.8 mi | 7.7 |
| MT. HELIX ACADEMY La Mesa | 0.8 mi | 7.4 |
| Mt. Helix Academy La Mesa | 0.8 mi | — |
| EJE Elementary Academy Charter El Cajon | 1.0 mi | 3.1 |
| EJE Middle Academy El Cajon | 1.0 mi | 4.4 |
| Parkway Sports and Health Science Academy La Mesa | 1.2 mi | 6.5 |
| FOOTHILLS CHRISTIAN HIGH SCHOOL El Cajon | 1.3 mi | 6.7 |
| Shepherd of the Hills Lutheran La Mesa | 1.2 mi | — |
| SHEPHERD OF THE HILLS LUTHERAN SCHOOL La Mesa | 1.2 mi | 4.7 |
| Fletcher Hills Elementary La Mesa | 1.4 mi | 7.3 |
| WARREN-WALKER SCHOOL-LA MESA La Mesa | 1.3 mi | 5.5 |
| Murdock Elementary La Mesa | 1.5 mi | 6.9 |
| Lemon Avenue Elementary La Mesa | 1.6 mi | 6.0 |
| Chase Avenue Elementary El Cajon | 1.5 mi | 2.5 |
| Johnson Elementary El Cajon | 1.7 mi | 5.0 |
| JCS - Manzanita La Mesa | 1.6 mi | 8.6 |
| OUR LADY OF GRACE ELEMENTARY SCHOOL El Cajon | 1.8 mi | 5.8 |
| Flying Hills School of Arts El Cajon | 2.2 mi | 3.0 |
| Spring Valley Academy Spring Valley | 2.2 mi | 5.0 |
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Elsinore High Wildomar, CA | 5.4 |
| Granite Hills High El Cajon, CA | 5.4 |
| Madera High Madera, CA | 5.4 |
| Mission Hills High San Marcos, CA | 5.4 |
| Monte Vista High Spring Valley, CA | 5.4 |
| Shadow Hills High Indio, CA | 5.4 |
Frequently Asked Questions
Common questions about Grossmont High
What grades does Grossmont High serve?
Grossmont High serves students in grades 9th through 12th.
How many students attend Grossmont High?
Grossmont High has an enrollment of approximately 2,079 students.
What is the student-teacher ratio at Grossmont High?
The student-teacher ratio at Grossmont High is 346.5:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Grossmont High rank in CA?
Grossmont High ranks #6,576 of 9,539 schools in CA.
What is Grossmont High's MySchoolScout rating?
Grossmont High has a current MySchoolScout rating of 5.4 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Grossmont High?
Based on loaded state assessment records, Grossmont High has 42% math proficiency (multi-year average, 2009-2024) and 62% reading/ELA proficiency (multi-year average, 2009-2024).
Is Grossmont High a charter school?
No, Grossmont High is not a charter school. It is a traditional public school operated by the local school district.
Is Grossmont High a Title I school?
No, Grossmont High is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Grossmont High?
63.5% of students at Grossmont High qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
Powered by 
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 2,079
- Student-Teacher Ratio
- 346.5:1
- Teachers (FTE)
- 6
- Free/Reduced Lunch
- 63.5%
- Type
- regular
- Setting
- Large Suburb
- County
- San Diego County
- Chronic Absenteeism (SY 2022-23)
- 25.3%
- Phone
- (619) 668-6000
- 4-Year Graduation
- 76.0%
Resources & Links
District
Grossmont Union High- District Enrollment
- 16,566
- Schools in District
- 15
- Per-Pupil Spending
- $18,399
- District Rank
- #5 of 14
Other Schools in This District
How we rate schools
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