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 school year, there are 8 public high schools serving 8,736 students in San Mateo Union High School District. This district's average high testing ranking is 10/10, which is in the top 10% of public high schools in California.
Public High Schools in San Mateo Union High School District have an average math proficiency score of 48% (versus the California public high school average of 28%), and reading proficiency score of 76% (versus the 51% statewide average).
Public High School in San Mateo Union High School District have a Graduation Rate of 91%, which is more than the California average of 86%.
The school with highest graduation rate is Aragon High School, with 98% graduation rate. Read more about public school graduation rate statistics in California or national school graduation rate statistics.
Minority enrollment is 76% of the student body (majority Hispanic), which is less than the California public high school average of 79% (majority Hispanic).
Overview
This School District
This State (CA)
# Schools
8 Schools
2,801 Schools
# Students
8,736 Students
2,122,788 Students
# Teachers
442 Teachers
101,054 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 1,904 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%)
Math Test Scores (% Proficient)
49%
34%
Reading/Language Arts Test Scores (% Proficient)
76%
47%
Science Test Scores (% Proficient)
51%
29%
Graduation Rate
91%
87%
Students by Ethnicity:
Diversity Score
0.73
0.63
% American Indian
n/a
1%
% Asian
29%
12%
% Hispanic
35%
56%
% Black
1%
5%
% White
24%
21%
% Hawaiian
2%
n/a
% Two or more races
9%
5%
All Ethnic Groups
District Revenue and Spending
The revenue/student of $30,029 is higher than the state median of $20,100. The school district revenue/student has grown by 17% over four school years.
The school district's spending/student of $26,262 is higher than the state median of $18,511. The school district spending/student has grown by 7% over four school years.
Total Revenue
$262 MM
$116,387 MM
Spending
$229 MM
$107,188 MM
Revenue / Student
$30,029
$20,100
Spending / Student
$26,262
$18,511
Best San Mateo Union High School District Public High Schools (2026)
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
Recent Articles
How Public Schools Train Staff Each Year
Learn how public schools train staff each year through professional development, safety training, technology instruction, and ongoing educational support.
What Substitute Teachers Experience in Public Schools
Discover what substitute teachers experience in public schools, including daily responsibilities, challenges, rewards, and their role in student success.
How Teachers Collaborate Across Departments in Public Schools
Learn how teachers collaborate across departments to improve student outcomes, strengthen instruction, and prepare students for real-world success.
