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 2025 school year, there are 9 public schools serving 8,799 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 50% (versus the California public school average of 33%), 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
9 Schools
10,369 Schools
# Students
8,799 Students
5,826,838 Students
# Teachers
457 Teachers
268,012 Teachers
Student : Teacher Ratio
19:1
19:1
District Rank
San Mateo Union High School District, which is ranked #178 of all 1,925 school districts in California (based off of combined math and reading proficiency testing data) for the 2021-2022 school year.
The school district's graduation rate of 92% has increased from 90% over five school years.
Overall District Rank
#185 out of 1941 school districts
(Top 10%)
(Top 10%)
Math Test Scores (% Proficient)
49%
33%
Reading/Language Arts Test Scores (% Proficient)
76%
47%
Science Test Scores (% Proficient)
51%
29%
Graduation Rate
92%
87%
Students by Ethnicity:
Diversity Score
0.73
0.63
# American Indian Students
3 Students
25,796 Students
% American Indian Students
n/a
1%
# Asian Students
2,515 Students
705,807 Students
% Asian Students
29%
12%
# Hispanic Students
3,079 Students
3,264,561 Students
% Hispanic Students
35%
56%
# Black Students
60 Students
286,112 Students
% Black Students
1%
5%
# White Students
2,150 Students
1,178,558 Students
% White Students
24%
20%
# Hawaiian Students
154 Students
23,731 Students
% Hawaiian Students
2%
n/a
# Two or more races Students
822 Students
333,755 Students
% of Two or more races Students
9%
6%
Students by Grade:
# Students in PK Grade:
-
83
# Students in K Grade:
-
522,456
# Students in 1st Grade:
-
396,605
# Students in 2nd Grade:
-
414,466
# Students in 3rd Grade:
-
416,628
# Students in 4th Grade:
-
426,361
# Students in 5th Grade:
-
430,587
# Students in 6th Grade:
-
432,997
# Students in 7th Grade:
-
439,621
# Students in 8th Grade:
-
441,777
# Students in 9th Grade:
2,071
466,534
# Students in 10th Grade:
2,108
476,585
# Students in 11th Grade:
2,162
469,511
# Students in 12th Grade:
2,458
492,627
# Ungraded Students:
-
-
District Revenue and Spending
The revenue/student of $29,814 is higher than the state median of $19,974. The school district revenue/student has stayed relatively flat over four school years.
The school district's spending/student of $26,074 is higher than the state median of $18,396. The school district spending/student has stayed relatively flat over four school years.
Total Revenue
$262 MM
$116,387 MM
Spending
$229 MM
$107,188 MM
Revenue / Student
$29,814
$19,974
Spending / Student
$26,074
$18,396
Best San Mateo Union High School District Public Schools (2025)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Grades
Students
Rank: #11.
Mills High School
(Math: 70-74% | Reading: 80-84%)
Rank:
Rank:
10/
Top 5%10
400 Murchison Dr.
Millbrae, CA 94030
(650) 558-2599
Millbrae, CA 94030
(650) 558-2599
Grades: 9-12
| 1,119 students
Rank: #22.
Aragon High School
(Math: 63% | 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
Grades: 9-12
| 1,686 students
Rank: #33.
Burlingame High School
(Math: 61% | Reading: 85%)
Rank:
Rank:
10/
Top 10%10
1 Mangini Way
Burlingame, CA 94010
(650) 558-2899
Burlingame, CA 94010
(650) 558-2899
Grades: 9-12
| 1,540 students
Rank: #44.
Hillsdale High School
(Math: 44% | Reading: 71%)
Rank:
Rank:
9/
Top 20%10
3115 Del Monte St.
San Mateo, CA 94403
(650) 558-2699
San Mateo, CA 94403
(650) 558-2699
Grades: 9-12
| 1,581 students
Rank: #55.
San Mateo High School
(Math: 45% | Reading: 68%)
Rank:
Rank:
9/
Top 20%10
506 North Delaware St.
San Mateo, CA 94401
(650) 558-2399
San Mateo, CA 94401
(650) 558-2399
Grades: 9-12
| 1,578 students
Rank: #66.
Capuchino High School
(Math: 26% | Reading: 68%)
Rank:
Rank:
7/
Top 50%10
1501 Magnolia Ave.
San Bruno, CA 94066
(650) 558-2799
San Bruno, CA 94066
(650) 558-2799
Grades: 9-12
| 1,108 students
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
Grades: 9-12
| 186 students
Rank: #88.
Peninsula High School
Alternative School
(Math: ≤10% | Reading: 11-19% )
Rank:
Rank:
1/
Bottom 50%10
860 Hinckley Rd.
Burlingame, CA 94010
(650) 558-2499
Burlingame, CA 94010
(650) 558-2499
Grades: 9-12
| 1 students
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
Grades: n/a
| n/a students
Frequently Asked Questions
How many schools belong to San Mateo Union High School District?
San Mateo Union High School District manages 9 public schools serving 8,799 students.
What is the rank of San Mateo Union High School District?
San Mateo Union High School District is ranked #178 out of 1,925 school districts in California (top 10%) based off of combined math and reading proficiency testing data for the 2021-2022 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 19:1, 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 $26,074 is higher than the state median of $18,396. The school district spending/student has stayed relatively flat over four school years.
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