Very Good
#2387 of 9,539 schools in CA
Top 25% in state
San Mateo High
High School · San Mateo Union High
506 North Delaware St., San Mateo, CA 94401
Enrollment
1,578
Student-Teacher
18.1:1
Score
7.6
Grades
9th – 12th
Enrollment
1,578
Student-Teacher
18.1:1
Score
7.6
Grades
9th – 12th
Data vintage
2022-23
Data vintage2022-23
How this school compares
California schools
#2,387 of 9,539
In San Mateo
#7 of 19
public schools
In district
#4 of 7
San Mateo Union High
School environment
9.5 / 10
Excellent
Shortlisting around San Mateo High?
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San Mateo High
High School in San Mateo · grades 9th – 12th. Start here, then compare fit against nearby and district options.
Stanbridge Academy
0.1 mi away. Use as a geographic alternative in the same move search.
College Park Elementary
0.1 mi away. Use as a geographic alternative in the same move search.
About San Mateo High
San Mateo High is a public high school in San Mateo, CA, part of San Mateo Union High. San Mateo High serves approximately 1,578 students, and covers grades 9th-12th, and has a 18.1:1 student-teacher ratio. San Mateo High has a current MySchoolScout rating of 7.6 out of 10 and ranks #2,387 of 9,539 schools in CA.
Structured state assessment records for San Mateo High show 53% math proficiency (multi-year average, 2009-2024) and 66% reading/ELA proficiency (multi-year average, 2009-2024).
- This school 7.6 · Very Good
- District avg 7.3
- CA avg 6.5
Score Breakdown
Full Profile · 4/4 metricsView breakdown
View breakdown
View breakdown
View breakdown
San Mateo High — Students at San Mateo High score 55% proficient, which is below what's typical for similar communities (expected: 59%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
28.2%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 26 test records from CA state assessments. About our data
Proficiency Trend
→ StableAverage proficiency (% at or above grade level) across Math & ELA over time.
Source: EdFacts (NCES) and state assessment data. Growth score: 8.0/10.
How San Mateo High Compares
See how San Mateo 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
506 North Delaware St., San Mateo, CA 94401
Nearby Alternatives
Families considering San Mateo High may also want to explore other high schools in the area. College Park Elementary (rated 9.5/10, 0.1 miles away), which scores notably higher. Another option is North Shoreview Montessori (rated 9.3/10, 0.7 miles away), which scores notably higher. Additionally, South Hillsborough (rated 8.9/10, 1.1 miles away, in nearby Hillsborough), which scores notably higher. For more schools in San Mateo, see our San Mateo schools guide .
Nearby Schools
20 within 1.7 mi| School | Distance | Rating |
|---|---|---|
| Stanbridge Academy San Mateo | 0.1 mi | — |
| STANBRIDGE ACADEMY San Mateo | 0.1 mi | 7.2 |
| College Park Elementary San Mateo | 0.1 mi | 9.5 |
| PACIFIC RIM INT'L SCHOOL San Mateo | 0.4 mi | — |
| Genius Learning Burlingame | 0.4 mi | — |
| Washington Elementary Burlingame | 0.6 mi | 8.2 |
| EPISCOPAL DAY SCHOOL OF ST. MATTHEW San Mateo | 0.8 mi | 8.0 |
| Episcopal Day School of St. Matthew San Mateo | 0.8 mi | — |
| North Shoreview Montessori San Mateo | 0.7 mi | 9.3 |
| San Mateo Park Elementary San Mateo | 0.9 mi | 3.9 |
| ST CATHERINE OF SIENA SCHOOL Burlingame | 0.8 mi | 6.5 |
| South Hillsborough Hillsborough | 1.1 mi | 8.9 |
| Burlingame High Burlingame | 1.0 mi | 8.5 |
| ST TIMOTHY SCHOOL San Mateo | 1.0 mi | 6.3 |
| St. Matthew Catholic San Mateo | 1.3 mi | — |
| Crystal Springs Uplands School Hillsborough | 1.4 mi | — |
| CENTENNIAL MONTESSORI SCHOOL San Mateo | 1.5 mi | 7.4 |
| Sunnybrae Elementary San Mateo | 1.4 mi | 3.4 |
| TULANE MONTESSORI CHILDREN'S HOUSE San Mateo | 1.7 mi | — |
| Baywood Elementary San Mateo | 1.7 mi | 6.5 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 94401 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$121,258
Median Home Value
$1,123,300
Median Rent
$2,713/mo
Population
35,628
College Educated
45.3%
Homeownership
44.4%
Avg Commute
27.1 min
Poverty Rate
10.9%
Median Age
35.9
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Charter Oak High Covina, CA | 7.6 |
| Delano High Delano, CA | 7.6 |
| Hollywood Senior High Los Angeles, CA | 7.6 |
| Monterey High Monterey, CA | 7.6 |
| Murrieta Valley High Murrieta, CA | 7.6 |
| New West Charter Los Angeles, CA | 7.6 |
Frequently Asked Questions
Common questions about San Mateo High
What grades does San Mateo High serve?
San Mateo High serves students in grades 9th through 12th.
How many students attend San Mateo High?
San Mateo High has an enrollment of approximately 1,578 students.
What is the student-teacher ratio at San Mateo High?
The student-teacher ratio at San Mateo High is 18.1:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does San Mateo High rank in CA?
San Mateo High ranks #2,387 of 9,539 schools in CA.
What is San Mateo High's MySchoolScout rating?
San Mateo High has a current MySchoolScout rating of 7.6 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 San Mateo High?
Based on loaded state assessment records, San Mateo High has 53% math proficiency (multi-year average, 2009-2024) and 66% reading/ELA proficiency (multi-year average, 2009-2024).
Is San Mateo High a charter school?
No, San Mateo High is not a charter school. It is a traditional public school operated by the local school district.
Is San Mateo High a Title I school?
No, San Mateo High is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for San Mateo High?
28.2% of students at San Mateo 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
- 1,578
- Student-Teacher Ratio
- 18.1:1
- Teachers (FTE)
- 87
- Free/Reduced Lunch
- 28.2%
- Type
- regular
- Setting
- Midsize City
- County
- San Mateo County
- Chronic Absenteeism (SY 2022-23)
- 24.1%
- Phone
- (650) 558-2399
- 4-Year Graduation
- 88.0%
Resources & Links
District
San Mateo Union High- District Enrollment
- 8,841
- Schools in District
- 7
- Per-Pupil Spending
- $24,541
- District Rank
- #4 of 7
Other Schools in This District
How we rate schools
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