San Mateo High School
High school in San Mateo, CA · San Mateo Union High · Grades 9-12
On the spring 2026 state tests, 62% of San Mateo High School students met or exceeded California's reading (ELA) standard and 48% met the math standard. In reading, that is 7 points below the San Mateo Union High average (69%) and 13 points above the California average (49%). Its reading result is higher than 58% of Bay Area high schools, and it ranks 3rd of 3 public high schools in San Mateo. Reading results in 2026 were 4 points lower than in 2024, and math results were 5 points higher than in 2024.
Test scores, 2024 to 2026
| Subject | Spring 2024 | Spring 2025 | Spring 2026 | Change |
|---|---|---|---|---|
| Reading (ELA) | 66% | 63% | 62% | −4 pts |
| Math | 43% | 44% | 48% | +5 pts |
Compared with nearby averages
| Spring 2026 | Reading (ELA) | Math |
|---|---|---|
| San Mateo High School | 62% | 48% |
| San Mateo Union High | 69% | 51% |
| San Mateo County | 59% | 53% |
| California | 49% | 38% |
Where graduates go
Share of the class of 2022-23 enrolled in college within 16 months of graduating.
For fall 2025, UC admitted 131 of 164 freshman applicants from San Mateo High School (80%), and 51 enrolled.
Homes near San Mateo High School
The typical home value in ZIP code 94401, where San Mateo High School is located, is $1.20M, up 5% over the past year (Zillow Home Value Index). Prices inside the school's attendance zone can differ.
Zillow and Redfin can both search for homes inside a school’s attendance zone and email you new listings. Search for the school by name on either site and save the search.
Nearby high schools
| Distance | School | Reading (ELA) | Math | Typical home value (ZIP) |
|---|---|---|---|---|
| 1.0 mi | Burlingame HighBurlingame · Grades 9-12 | 76% | 61% | $3.52M |
| 1.9 mi | Aragon HighSan Mateo · Grades 9-12 | 81% | 65% | $2.46M |
| 3.2 mi | Hillsdale HighSan Mateo · Grades 9-12 | 68% | 43% | $1.81M |
| 3.4 mi | Mills HighMillbrae · Grades 9-12 | 80% | 63% | $2.06M |
| 4.7 mi | Capuchino HighSan Bruno · Grades 9-12 | 51% | 24% | $1.29M |
| 4.8 mi | Design Tech High CharterRedwood City · Grades 9-12 | 81% | 59% | $1.78M |
School details
- Address
- 506 North Delaware Street, San Mateo, CA 94401
Get directions · See it on our map - Phone
- (650) 558-2399
- District
- San Mateo Union High
- County
- San Mateo County
- Grades
- 9-12
- Students
- 1,532 (2025-26)
- Type
- High school · Traditional
- Website
- smhs.smuhsd.org
- State school code
- 41690474136370
Common questions
How did San Mateo High School do on state tests?
In spring 2026, 62% of students met or exceeded the reading (ELA) standard and 48% met the math standard, compared with 49% and 38% across California.
How many students attend San Mateo High School?
1,532 students were enrolled in the 2025-26 school year, in grades 9-12.
How many San Mateo High School students get into UC?
For fall 2025, 131 of 164 UC freshman applicants from San Mateo High School were admitted. Of the class of 2022-23, 16% enrolled at a UC campus within 16 months.
How much do homes cost near San Mateo High School?
The typical home value in ZIP code 94401, where San Mateo High School is located, is $1.20M, up 5% over the past year (Zillow Home Value Index). Prices inside the school's attendance zone can differ.
Does living near San Mateo High School guarantee a spot?
No. Public schools assign students by attendance zone, which San Mateo Union High sets and can change. Confirm the zone for a specific address with the district before you buy or rent.