Top Rankings
San Mateo Union High School District ranks among the top 20% of public school district in California for:
Category
Attribute
Overall Rank
Highest overall rank (Top 10%)
Math Proficiency
Highest math proficiency (Top 20%)
Reading/Language Arts Proficiency
Highest reading/language arts proficiency (Top 5%)
Science Proficiency
Highest science proficiency (Top 20%)
Diversity
Most diverse schools (Top 1%)
Community Size
Largest student body (number of students) (Top 1%)
For the 2026-27 school year, there are 8 public schools serving 8,736 students in San Mateo Union High School District. This district's average testing ranking is 10/10, which is in the top 10% of public schools in California.
Public Schools in San Mateo Union High School District have an average math proficiency score of 48% (versus the California public school average of 35%), and reading proficiency score of 76% (versus the 47% statewide average).
Minority enrollment is 76% of the student body (majority Hispanic), which is less than the California public school average of 80% (majority Hispanic).
Overview
This School District
This State (CA)
# Schools
8 Schools
10,323 Schools
# Students
8,736 Students
5,788,587 Students
# Teachers
442 Teachers
267,491 Teachers
Student-Teacher Ratio
20:1
20:1
Student By Grade
District Rank
San Mateo Union High School District, which is ranked #190 of all 1,903 school districts in California (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
The school district's graduation rate of 91% has decreased from 92% over five school years.
Overall District Rank
#171 out of 1932 school districts
(Top 10%)
(Top 10%)
Showing 2012–2023. Full 14-year historical data available below ↓
Math Test Scores (% Proficient)
49%
34%
Showing 2012–2023. Full 14-year historical data available below ↓
Reading/Language Arts Test Scores (% Proficient)
76%
47%
Showing 2011–2022. Full 13-year historical data available below ↓
Science Test Scores (% Proficient)
51%
29%
Graduation Rate
91%
86.2%
Showing 2014–2023. Full 13-year historical data available below ↓
Chronically Absent Students
(2022-23)16.1%
27.7%
Students by Ethnicity:
Diversity Score
0.73
0.63
Showing 2014–2023. Full 36-year historical data available below ↓
% American Indian
n/a
1%
% Asian
29%
12%
Showing 2014–2023. Full 36-year historical data available below ↓
% Hispanic
35%
56%
Showing 2014–2023. Full 36-year historical data available below ↓
% Black
1%
5%
Showing 2014–2023. Full 36-year historical data available below ↓
% White
24%
20%
Showing 2014–2023. Full 36-year historical data available below ↓
% Hawaiian
2%
n/a
% Two or more races
9%
6%
Showing 2014–2023. Full 15-year historical data available below ↓
All Ethnic Groups
District Revenue and Spending
The revenue/student of $35,429 is higher than the state median of $26,022. The school district revenue/student has grown by 14% over four school years.
The school district's spending/student of $34,933 is higher than the state median of $22,604. The school district spending/student has grown by 11% over four school years.
Total Revenue
$310 MM
$150,628 MM
Showing 2014–2023. Full 34-year historical data available below ↓
Spending
$305 MM
$130,845 MM
Showing 2014–2023. Full 34-year historical data available below ↓
Revenue / Student
$35,429
$26,022
Showing 2014–2023. Full 34-year historical data available below ↓
Spending / Student
$34,933
$22,604
Showing 2014–2023. Full 34-year historical data available below ↓
Best San Mateo Union High School District Public Schools (2026-27)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Burlingame High School
(Math: 65% | Reading: 85%)
Rank:
Rank:
10/
Top 10%10
1 Mangini Way
Burlingame, CA 94010
(650) 558-2899
Burlingame, CA 94010
(650) 558-2899
Gr: 9-12 | 1,583 students Student-teacher ratio: 20:1 Minority enrollment: 59%
Rank: #22.
Aragon High School
(Math: 61% | Reading: 86%)
Rank:
Rank:
10/
Top 10%10
900 Alameda De Las Pulgas
San Mateo, CA 94402
(650) 558-2999
San Mateo, CA 94402
(650) 558-2999
Gr: 9-12 | 1,658 students Student-teacher ratio: 22:1 Minority enrollment: 74%
Rank: #33.
Mills High School
(Math: 57% | Reading: 80-84%)
Rank:
Rank:
10/
Top 10%10
400 Murchison Dr.
Millbrae, CA 94030
(650) 558-2599
Millbrae, CA 94030
(650) 558-2599
Gr: 9-12 | 1,115 students Student-teacher ratio: 21:1 Minority enrollment: 89%
Rank: #44.
Hillsdale High School
(Math: 39% | Reading: 71%)
Rank:
Rank:
8/
Top 30%10
3115 Del Monte St.
San Mateo, CA 94403
(650) 558-2699
San Mateo, CA 94403
(650) 558-2699
Gr: 9-12 | 1,585 students Student-teacher ratio: 19:1 Minority enrollment: 69%
Rank: #55.
San Mateo High School
(Math: 38% | Reading: 68%)
Rank:
Rank:
8/
Top 30%10
506 North Delaware St.
San Mateo, CA 94401
(650) 558-2399
San Mateo, CA 94401
(650) 558-2399
Gr: 9-12 | 1,557 students Student-teacher ratio: 19:1 Minority enrollment: 84%
Rank: #66.
Capuchino High School
(Math: 33% | Reading: 68%)
Rank:
Rank:
8/
Top 30%10
1501 Magnolia Ave.
San Bruno, CA 94066
(650) 558-2799
San Bruno, CA 94066
(650) 558-2799
Gr: 9-12 | 1,061 students Student-teacher ratio: 19:1 Minority enrollment: 83%
Rank: #77.
Peninsula High (Continuation School)
Alternative School
(Math: ≤10% | Reading: 11-19%)
Rank:
Rank:
1/
Bottom 50%10
860 Hinckley Rd.
Burlingame, CA 94010
(650) 558-2402
Burlingame, CA 94010
(650) 558-2402
Gr: 9-12 | 123 students Student-teacher ratio: 14:1 Minority enrollment: 94%
Rank: n/an/a
The Bridge Academy
Alternative School
798 East Poplar Ave
San Mateo, CA 94401
(650) 558-2271
San Mateo, CA 94401
(650) 558-2271
Gr: 10-12 | 54 students Student-teacher ratio: 11:1
Frequently Asked Questions
How many schools belong to San Mateo Union High School District?
San Mateo Union High School District manages 8 public schools serving 8,736 students.
What is the rank of San Mateo Union High School District?
San Mateo Union High School District is ranked #190 out of 1,903 school districts in California (top 10%) based off of combined math and reading proficiency testing data for the 2022-2023 school year. This district ranks in the top 20% of California school districts for: Highest overall rank (Top 10%), Highest math proficiency (Top 20%), Highest reading/language arts proficiency (Top 5%), Highest science proficiency (Top 20%), Most diverse schools (Top 1%) and Largest student body (number of students) (Top 1%)
What is the racial composition of students in San Mateo Union High School District?
35% of San Mateo Union High School District students are Hispanic, 29% of students are Asian, 24% of students are White, 9% of students are Two or more races, 2% of students are Hawaiian, and 1% of students are Black.
What is the student/teacher ratio of San Mateo Union High School District?
San Mateo Union High School District has a student/teacher ratio of 20:1, which is lower than the California state average of 22:1.
What is San Mateo Union High School District's spending/student ratio?
The school district's spending/student of $34,933 is higher than the state median of $22,604. The school district spending/student has grown by 11% over four school years.
Recent Articles
When a Public School Cancels a Course Your Child Needs
Learn what parents can do when public schools cancel essential courses, including protecting graduation credits, finding approved alternatives, requesting substitutions, and preventing disruptions to college or career plans before deadlines.
Verify School Assignment Before Buying a House
Before buying a house, learn how to verify your child's assigned public school, check conflicting property listings, confirm enrollment eligibility, and avoid costly school assignment surprises before closing on a property.
School Bus Commute Times: What Parents Should Know
Discover how long school bus commutes really take, why routes vary, and what parents should ask about pickup times, student fatigue, transportation reliability, and daily schedules before choosing schools.
