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San Mateo High

High school · San Mateo Union High School District

San Mateo High

San Mateo High serves grades 9–12 for 1,578 students in San Mateo Union High School District.

School calendarAt a glanceDirections

Next day off: Wed, Nov 11 · Veterans Day - District Office and School Sites Closed · All days off

San Mateo Union High School District calendar

Key dates

  1. Veterans Day - District Office and School Sites ClosedWednesday · All dayKey date

Coming up

  1. SMUHSD Board Meeting - Special Budget Study SessionThursday · 7:00 PM · District Office, 650 N. Delaware Street, San Mateo
  2. Mills Drama Presents: PuffsThursday · 7:00 PM · Mills High School Theater, 400 Murchison Drive, Millbrae
  3. Mills Drama Presents: PuffsFriday · 7:00 PM · Mills High School Theater, 400 Murchison Drive, Millbrae
  4. Mills Drama Presents: PuffsSaturday · 2:00 PM · Mills High School Theater, 400 Murchison Drive, Millbrae
  5. Mills Drama Presents: PuffsSaturday · 7:00 PM · Mills High School Theater, 400 Murchison Drive, Millbrae
  6. Equity Advisory Council MeetingThursday · 6:00 PM · District Office, 650 N. Delaware Street, San Mateo
  7. Hillsdale High Drama Presents Legally Blonde, The MusicalThursday · 7:00 PM · Hillsdale High School, 3115 Del Monte Street, San Mateo
  8. Capuchino High Drama presents Shakespeare in LoveThursday · 7:00 PM · Capuchino High School, 1501 Magnolia Drive, San Bruno

Last checked Oct 31, 2026, 3:19 PM. Confirm dates with the district ↗. Recurring calendar entries may not appear here.

Enrollment fell from 1,741 in 2019–20 to 1,578 in 2023–24. Its largest grade in 2023–24 was grade 12, with 453 students. 28% of students qualified for free or reduced-price lunch (445 free, 0 reduced-price). It ran a targeted Title I assistance program in 2019–20. The closest park is Woodlake Area (0.3 mi).

At a glance

San Mateo High by the numbers

Student–teacher ratio is not classroom size.

Grades9–12
Students1,578
Teachers87
Students per teacher18.1
Free or reduced-price lunch28%
School typeRegular School
DistrictSan Mateo Union High School District
Title ITargeted assistance program (2019–20)
Enrollment

Students at San Mateo High

Students by grade, 2023–24
  • 9384
  • 10360
  • 11381
  • 12453
Total enrollment by school year
  • 2019–201,741
  • 2020–211,671
  • 2021–221,669
  • 2022–231,613
  • 2023–241,578
Nearby

Parks near San Mateo High

All parks
Park · 0.3 miWoodlake AreaPark · 0.3 miMartin Luther King ParkPlaygroundPark · 0.8 miCoyote Point Recreation AreaPlayground
Contact

Address, phone and official links

506 North Delaware St., San Mateo 94401

(650) 558-2399

School website ↗San Mateo Union High School District website ↗California School Dashboard report cards ↗NCES school record ↗Directions ↗

State school ID 4136370 (search it on California School Dashboard) · NCES ID 063498005926

San Mateo Union High School District

Other high schools in the district

All schools
9–12Aragon High1,686 students9–12Hillsdale High1,581 students
Nearby

Schools nearby

Elementary school · 0.1 miCollege Park ElementaryGrades K–5Elementary school · 0.7 miNorth Shoreview MontessoriGrades K–8School · 0.8 miEpiscopal Day School Of St. MatthewGrades Pre-K–8Elementary school · 0.9 miSan Mateo Park ElementaryGrades K–5School · 1.0 miSt Timothy SchoolGrades Transitional K–8School · 1.4 miSt Matthew Catholic SchoolGrades K–8

Source: NCES Common Core of Data 2019–20 to 2023–24, via the Urban Institute Education Data Portal; parks from OpenStreetMap. Contact the school or district to confirm enrollment boundaries, schedules and programs.

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