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Very Good

#1932 of 9,533 schools in CA

Top 20% 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

7.7

Grades

9th – 12th

Updated 2022-23

How this school compares

In San Mateo

#5 of 19

public schools

California high schools

#331 of 1,892

In district

#4 of 7

San Mateo Union High

School environment

9.3 / 10

Exceptional

About San Mateo High

San Mateo High serves 1,578 students in grades 9-12 as a comprehensive public high school in San Mateo, California. With 87 full-time equivalent teachers, the school maintains an 18.1:1 student-teacher ratio, providing reasonably sized learning environments for its diverse student body. Academically, San Mateo High demonstrates solid performance with a MySchoolScout rating of 7.8 out of 10 and ranks in the 84th percentile statewide at #1550 out of 9566 California schools.

Students show particular strength in English Language Arts, with 66% achieving proficiency or above across grade levels. Mathematics presents more of a growth opportunity, with 43% of students reaching proficiency standards, indicating the school's ongoing focus on strengthening STEM instruction. The school draws from an established community where nearly half of residents hold bachelor's degrees or higher, and the median household income reaches $117,678.

This educated, middle-to-upper-middle-class neighborhood, with a relatively low poverty rate of 9.7%, provides a stable foundation for student learning. The area's median home value of over $1 million reflects the desirability of this San Mateo County location. San Mateo High operates in the heart of a thriving mid-size city that balances suburban comfort with proximity to the broader Bay Area's educational and professional opportunities.

Score Breakdown

Full Profile · 4/4 metrics
Student Progress6.4Above Average25%
Year-over-year improvement in student test scores.
View breakdown
Years of Data2
Annual Change-0.87 pts/yr
Data Period2019–2024
TrendStable
Academics7.3Very Good25%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency42.9%
Reading/ELA Proficiency66.5%
Math vs. State Avg+14.9 pts
Reading vs. State Avg+10.6 pts
Overall Proficiency55%
Expected (poverty-adj.)59%
vs. Expected-4.6 pts
Adjusted Percentile60th
College Readiness8.2Excellent30%
Graduation rates, AP course participation, and IB availability.
View breakdown
AP Participation21.1%
IB ProgramNo
Resources & Environment9.3Exceptional20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio18.1:1
Per-Pupil Spending$22,353

San Mateo High — Students at San Mateo High score 55% proficient, which is below what's typical for similar communities (expected: 59%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

28.2%

Students qualifying for federal meal assistance

Test Scores CA CAASPP (2023-24)

Math Proficiency 45.2%
School
State
31.8%
ELA Proficiency 67.0%
School
State
51.5%

Based on 6 test records from CA state assessments. About our data

Proficiency Trend

→ Stable

Average proficiency (% at or above grade level) across Math & ELA over time.

2019
Math
50%
ELA
68%
2024
Math
42.9%
ELA
66.5%

Source: EdFacts (NCES) and state assessment data. Growth score: 6.4/10.

How San Mateo High Compares

See how San Mateo High performs across key quality dimensions compared to state benchmarks.

Overall Score
7.7/10
80th percentile in CA
Academic
7.3/10
7.3/10
Growth
6.4/10
Above average
Environment
9.3/10
Above average

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
28%
Teaching Staff
18:1 student-teacher ratio
87 teachers

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. South Hillsborough (rated 9.4/10, 1.1 miles away, in nearby Hillsborough), which scores notably higher. Another option is North Shoreview Montessori (rated 9.1/10, 0.7 miles away), which scores notably higher. Additionally, Burlingame High (rated 9.0/10, 1.0 miles away, in nearby Burlingame), 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 7.0
PACIFIC RIM INT'L SCHOOL San Mateo 0.4 mi
Genius Learning Burlingame 0.4 mi
Washington Elementary Burlingame 0.6 mi 6.2
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 9.1
San Mateo Park Elementary San Mateo 0.9 mi 3.4
ST CATHERINE OF SIENA SCHOOL Burlingame 0.8 mi 6.5
South Hillsborough Hillsborough 1.1 mi 9.4
Burlingame High Burlingame 1.0 mi 9.0
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 5.0
TULANE MONTESSORI CHILDREN'S HOUSE San Mateo 1.7 mi
Baywood Elementary San Mateo 1.7 mi 5.1

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

Community Profile

The community surrounding San Mateo High has a median household income of $121,258. It is a well-educated community where 45% of adults hold a bachelor's degree or higher. The median home value in the area is $1,123,300, with a median rent of $2,713/month. The area has a poverty rate of 10.9%. The average commute for residents is 27 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
Alhambra High Alhambra, CA 7.7
Bonita High San Dimas, CA 7.7
Cerritos High Cerritos, CA 7.7
Citrus Valley High Redlands, CA 7.7
Del Oro High Loomis, CA 7.7
Fresno High Fresno, CA 7.7

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 is ranked #1932 out of 9,533 schools in CA.

What is San Mateo High's MySchoolScout rating?

San Mateo High has a composite rating of 7.7 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.

What are the test scores at San Mateo High?

Based on the most recent state assessment data, San Mateo High has 45.2% math proficiency and 67.0% reading/ELA proficiency.

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.

11 schools nearby View map →

Neighborhood Context

Walk Score
83 Very Walkable
Transit Score
44 Some Transit
Bike Score
70 Very Bikeable
City Safety
High (2,131/100K)

Powered by Walk Score

FBI UCR 2024. City-level (San Mateo). Data >1 year old.

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
Data Year
2023–2024

District

San Mateo Union High
District Enrollment
8,841
Schools in District
7
Per-Pupil Spending
$24,541
District Rank
#4 of 7

How We Rate Schools

Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.

Read our full methodology

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