Very Good
#2387 of 9,539 schools in CA
Top 25% in state
San Mateo High
High School · San Mateo Union High · San Mateo, CA
A San Mateo Union High high school where students score 4 points below what's typical for similar communities.
506 North Delaware St., San Mateo, CA 94401
- Math 43% vs CA 32% (2024)
- Reading 67% vs CA 52% (2024)
- 88.0% 4-year graduation
Academics
Full Profile · 4/4 metricsView breakdown
View breakdown
View breakdown
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Students at San Mateo High score 55% proficient, which is below what's typical for similar communities (expected: 59%).
2024 CAASPP proficiency
Most recent published year. School vs. CA average.
Trend
→ SteadyProficiency is down 7 points across the 16-year record (2009–2024) and has held near 55% recently.
Show all 12 years
Multi-year averages used by the rating model: math 53% (multi-year average, 2009-2024) · reading/ELA 66% (multi-year average, 2009-2024)
Based on 26 test records from CA state assessments and EdFacts (NCES).
Equity & diversity
Shown separately, not included in the overall scoreFree/reduced lunch
28.2%
Students qualifying for federal meal assistance
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 rateThe neighborhood
Where San Mateo High sits, and what the surrounding area looks like.
Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries. Open the San Francisco Bay Area map →
Getting around & local context
- Walk 83Very Walkable
- Transit 44Some Transit
- Bike 70Very Bikeable
- City Safety: High2,131/100K
Powered by
FBI Uniform Crime Reporting · 2024 · city context (San Mateo), not school-level safety or attendance eligibility. Source details
Source period: 2024. Freshness not available.
Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)
Median income
$121,258
Median home value
$1,123,300
Median rent
$2,713/mo
College educated
45.3%
Homeownership
44.4%
Poverty rate
10.9%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 94401; this is area context, not an attendance boundary.
Programs & students
Programs & Offerings
Compare nearby
Nearby same-level schools
4 from a 5-mile search; district fallback available
| School | Score | Grades | Distance | Enrollment | Compare |
|---|---|---|---|---|---|
| Stanbridge AcademyPrivate · tuition | Not rated | K–12 | 0.1 mi | 85 | Compare → |
| Stanbridge AcademyPrivate · tuition | 7.2private | K–12 | 0.1 mi | 91 | Compare → |
| Pacific Rim Int'l SchoolPrivate · tuition | Not rated | PK–10 | 0.4 mi | 27 | Compare → |
| Burlingame HighEnrollment path unverified | 8.5 | 9–12 | 1.0 mi | 1,540 | Compare → |
Distance is proximity only; it is not attendance eligibility.
Private · tuition: Potential private option; tuition and admission requirements have not been verified.
Enrollment path unverified: Potential public school; its attendance or application path has not been classified.
Public and private scores come from different models and are shown side by side, not blended into one ranking.
San Mateo Union High
- Schools in district
- 7
- Rank in district
- #4 of 7
- District spending per student
- $24,541NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- 6.0%Census SAIPE · 2024
San Mateo High is listed in San Mateo Union High; a district label does not verify attendance for an address.
About San Mateo High
San Mateo High is a public high school in San Mateo, CA, part of San Mateo Union High, serving approximately 1,578 students in grades 9th-12th with a 18.1:1 student-teacher ratio. It holds a MySchoolScout rating of 7.6 out of 10 and ranks #2,387 of 9,539 schools in CA. State assessment records show 53% math proficiency (multi-year average, 2009-2024) and 66% reading/ELA proficiency (multi-year average, 2009-2024).
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.
School factsNCES Common Core of Data (CCD) (SY 2023–24)
- Grades
- 9th – 12th
- Enrollment
- 1,578
- Student-Teacher Ratio
- 18.1:1
- Teachers (FTE)
- 87
- 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%
- Area population (ZIP 94401)
- 35,628
- Area average commute
- 27.1 min
- Area median age
- 35.9
Official sources & links
About this school's data
Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.
- School directory (enrollment, grades, staff, contact)
- NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
- Source period: SY 2023–24. A newer release may be available.
- MySchoolScout rating and rank
- MySchoolScout ranking model · Low confidence
- Vintage not available. Do not use this measure alone.
- Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
- Math proficiency
- State department of education · 2024 CAASPP · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: 2024 CAASPP. A newer release may be available.
- Derived from source records rather than read directly from one field.
- Reading/ELA proficiency
- State department of education · 2024 CAASPP · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: 2024 CAASPP. A newer release may be available.
- Derived from source records rather than read directly from one field.
- Student progress (growth)
- NCES EdFacts · Mixed source periods · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
- Neighborhood (income, housing, education)
- U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
- Older source: ACS 2019–2023 5-year estimates. Use as historical context.
- Reported for the ZCTA for ZIP 94401; this does not measure the attendance area.
- Programs (AP/IB, athletics, gifted)
- CRDC via Urban Institute · SY 2021–22 · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: SY 2021–22. A newer release may be available.
Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2024; directory SY 2023–24
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