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San Mateo County

California · Public K-12

San Mateo County, California's 176 public schools span elementary through high school (110 elementary, 26 middle, and 37 high). Total enrollment is roughly 82,403 students.

7-year change in San Mateo County

SY 2017-18 vs SY 2024-25
Total enrollment
82,403
-12,117 (-13%) vs SY 2017-18
School count
169
-9 (-5%) vs SY 2017-18
% White
22%
was 28%
% Hispanic
40%
was 38%
% Black
1%
was 2%
% Asian
25%
was 24%
Source: NCES Common Core of Data, enrollment-weighted demographic averages
Schools
176
37 districts
Enrollment
82,403
NCES CCD
Median income
$158,855
Above California avg
Free/reduced lunch
34.0%
Below California avg
Elementary
110
40,080 students
Middle
26
15,878 students
High
37
26,401 students
Combined / other
3
44 students
LARGEST DISTRICT
San Mateo-Foster City
9,906 students · 37 districts in San Mateo County

County vs. school enrollment demographics

Left bar is the racial makeup of San Mateo County residents (Census ACS 5-year). Right bar is the enrollment-weighted makeup of public schools in the county (NCES CCD). NCES systematically under-reports Hispanic, Pacific Islander, and Native American enrollment for many schools; where the resident share is meaningful but the reported school share is zero, we mark the school bar "not reported".

County residents
White
38%
Hispanic
25%
Black
2%
Asian
31%
Two or more
14%
Native American
1%
Pacific Islander
1%
School enrollment
White
22%
Hispanic
40%
Black
1%
Asian
25%
Two or more
10%
Native American
0%
Pacific Islander
1%
Bachelor's+
53.7%
adults 25+
Poverty rate
4.0%
ACS 5-year
Unemployment
4.8%
civilian labor
Median age
41
19.5% under 18

Test scores in San Mateo County

Latest 2023-24 ELA proficiency, 139 schools ranked. California state average: 47.6%.

See all 139 schools in San Mateo County ranked by score →

All schools (176)

LargestA-ZTop rated
NameCityLevelGradesEnrollmentRating
Carlmont HighBelmontHigh09-122,360·
Menlo-Atherton HighAthertonHigh09-122,158·
Sequoia HighRedwood CityHigh09-121,854·
Woodside HighWoodsideHigh09-121,660·
Aragon HighSan MateoHigh09-121,658·
Hillsdale HighSan MateoHigh09-121,585·
Burlingame HighBurlingameHigh09-121,583·
San Mateo HighSan MateoHigh09-121,557·
Westmoor HighDaly CityHigh09-121,278·
South San Francisco HighSouth San FranciscoHigh09-121,239·
Burlingame IntermediateBurlingameMiddle06-081,115·
Mills HighMillbraeHigh09-121,115·
Ralston IntermediateBelmontMiddle06-081,082·
Jefferson HighDaly CityHigh09-121,072·
Capuchino HighSan BrunoHigh09-121,061·
El Camino HighSouth San FranciscoHigh09-121,053·
Bowditch MiddleFoster CityMiddle06-08929·
Half Moon Bay HighHalf Moon BayHigh09-12911·
Borel MiddleSan MateoMiddle06-08903·
Hillview MiddleMenlo ParkMiddle06-08846·
Bayside AcademySan MateoElementaryKG-08840·
John F. Kennedy MiddleRedwood CityMiddle06-08808·
Taylor MiddleMillbraeMiddle06-08756·
Terra Nova HighPacificaHigh09-12740·
Abbott MiddleSan MateoMiddle06-08721·
KIPP Excelencia Community PreparatoryRedwood CityElementaryKG-08711·
Clifford ElementaryRedwood CityElementaryKG-08698·
Hoover ElementaryRedwood CityElementaryKG-08675·
Laurel ElementaryAthertonElementaryKG-05658·
Alta Loma MiddleSouth San FranciscoMiddle06-08652·
Roy Cloud ElementaryRedwood CityElementaryKG-08636·
Foster City ElementaryFoster CityElementaryKG-05624·
La Entrada MiddleMenlo ParkMiddle04-08612·
Encinal ElementaryAthertonElementaryKG-05604·
Fernando Rivera IntermediateDaly CityMiddle06-08588·
KIPP Valiant Community PrepMenlo ParkElementaryKG-08587·
Buri Buri ElementarySouth San FranciscoElementaryKG-05584·
Adelante Selby Spanish ImmersionAthertonElementaryKG-05582·
Oak Knoll ElementaryMenlo ParkElementaryKG-05574·
Parkway Heights MiddleSouth San FranciscoMiddle06-08573·
Design Tech HighRedwood CityHigh09-12567·
Nesbit ElementaryBelmontElementaryKG-08566·
Thomas R. Pollicita MiddleDaly CityMiddle06-08558·
Alvin S. Hatch ElementaryHalf Moon BayElementaryKG-05544·
McKinley ElementaryBurlingameElementaryKG-05541·
Sandpiper ElementaryRedwood CityElementaryKG-08534·
North Star AcademyRedwood CityMiddle03-08527·
Cabrillo ElementaryPacificaElementaryKG-08524·
Las Lomitas ElementaryAthertonElementaryKG-03522·
Manuel F. Cunha IntermediateHalf Moon BayMiddle06-08521·
Monte Verde ElementarySan BrunoElementaryKG-05517·
Orion AlternativeRedwood CityElementaryKG-05512·
Vallemar ElementaryPacificaElementaryKG-08500·
Westborough MiddleSouth San FranciscoMiddle06-08498·
Benjamin Franklin IntermediateColmaMiddle06-08497·
Aspire East Palo Alto CharterEast Palo AltoElementaryKG-08496·
Parkside IntermediateSan BrunoMiddle06-08491·
Baywood ElementarySan MateoElementaryKG-05489·
Cesar Chavez Ravenswood MiddleEast Palo AltoMiddle06-08488·
John Muir ElementarySan BrunoElementaryKG-06486·
Ingrid B. Lacy MiddlePacificaMiddle06-08484·
McKinley Institute of TechnologyRedwood CityMiddle06-08476·
Cipriani ElementaryBelmontElementaryKG-05471·
Oceana HighPacificaHigh09-12471·
Laurel ElementarySan MateoElementaryKG-05469·
Summit Public School: ShastaDaly CityHigh09-12458·
Tierra Linda MiddleSan CarlosMiddle06-08451·
Crocker MiddleHillsboroughMiddle06-08446·
Audubon ElementaryFoster CityElementaryKG-05445·
Henry Ford ElementaryRedwood CityElementaryKG-05445·
Central MiddleSan CarlosMiddle06-08443·
Central ElementaryBelmontElementaryKG-05437·
College Park ElementarySan MateoElementaryKG-05431·
Fox ElementaryBelmontElementaryKG-05420·
Fiesta Gardens International ElementarySan MateoElementaryKG-05418·
Parkside MontessoriSan MateoElementaryKG-08418·
Lincoln ElementaryBurlingameElementaryKG-05415·
Brittan Acres ElementarySan CarlosElementaryKG-03411·
Washington ElementaryBurlingameElementaryKG-05410·
Susan B. Anthony ElementaryDaly CityElementaryKG-05407·
Ortega ElementaryPacificaElementaryKG-05404·
Redwood Shores ElementaryRedwood CityElementaryKG-05404·
Allen (Decima M.) ElementarySan BrunoElementaryKG-05396·
Arundel ElementarySan CarlosElementaryKG-03388·
Woodside ElementaryWoodsideElementaryKG-08385·
Spruce ElementarySouth San FranciscoElementaryKG-05384·
Roosevelt ElementaryRedwood CityElementaryKG-05382·
Highlands ElementarySan MateoElementaryKG-05379·
Portola ElementarySan BrunoElementaryKG-06378·
San Carlos Charter Learning CenterSan CarlosElementaryKG-08377·
Spring Valley ElementaryMillbraeElementaryKG-05375·
George Hall ElementarySan MateoElementaryKG-05370·
Martin ElementarySouth San FranciscoElementaryKG-05370·
Costano ElementaryEast Palo AltoElementaryKG-05369·
Ocean Shore ElementaryPacificaElementaryKG-08368·
Skyline ElementaryDaly CityElementaryKG-05366·
Meadows ElementaryMillbraeElementaryKG-05360·
Ponderosa ElementarySouth San FranciscoElementaryKG-05359·
Franklin ElementaryBurlingameElementaryKG-05357·
Taft ElementaryRedwood CityElementaryKG-05357·

Cities in San Mateo County

San Mateo23 schoolsRedwood City22 schoolsDaly City20 schoolsSouth San Francisco14 schoolsBurlingame10 schoolsPacifica10 schoolsSan Carlos10 schoolsSan Bruno9 schoolsEast Palo Alto7 schoolsMenlo Park7 schoolsBelmont6 schoolsFoster City6 schoolsAtherton5 schoolsHalf Moon Bay5 schoolsMillbrae5 schoolsHillsborough4 schoolsWoodside3 schoolsBrisbane2 schoolsColma2 schoolsPescadero2 schoolsPortola Valley2 schoolsLa Honda1 schoolMontara1 school

About San Mateo County

San Mateo County is a large California county of about 742,340 residents, home to 176 public schools and roughly 82,403 students.

Looking at the broader picture, census numbers show median household income runs near $158,855, 54% of adults hold a bachelor's degree or higher, and the poverty rate is around 4%. That income level is 78% noticeably above the California median.

In terms of grade levels, San Mateo County consists of 110 elementary schools (40,080 students), 26 middle schools (15,878), 37 high schools (26,401), and 3 combined or other schools.

San Mateo-Foster City is the biggest district by enrollment, covering about 9,906 students across San Mateo County.

Trend over the past 7 years. Combined enrollment now sits at 82,403 students, fell 13% from the 94,520 reported in SY 2017-18. Over that span, San Mateo County closed 9 schools, going from 178 to 169. Demographically, the White share of enrollment contracted from 28% to 22%.

Within the allk12 community for this area, the community for San Mateo County discusses sports rivalries, cross-district programs, and shared facilities. Posts come from current and former families, staff, and alumni.

Frequently asked questions

How many K-12 schools serve San Mateo County?
There are 176 public K-12 schools in San Mateo County, California, with a combined enrollment of about 82,403.
How many high schools are in San Mateo County?
San Mateo County, California has 37 public high schools, serving approximately 26,401 students.
How many middle schools are in San Mateo County?
San Mateo County, California has 26 public middle schools, serving approximately 15,878 students.
How many elementary schools are in San Mateo County?
San Mateo County, California has 110 public elementary schools, serving approximately 40,080 students.
What is the largest school district in San Mateo County?
San Mateo-Foster City is the largest school district in San Mateo County, serving approximately 9,906 students. The county contains 37 school districts overall.
How many people live in San Mateo County?
San Mateo County has roughly 742,340 residents according to the latest Census ACS 5-year estimate.
What is the median household income in San Mateo County?
Median household income in San Mateo County is $158,855, above the California average of $89,387. About 4.0% of residents live below the federal poverty line.
How educated are residents of San Mateo County?
Approximately 53.7% of adults 25 and older in San Mateo County hold a bachelor's degree or higher, according to the Census ACS 5-year estimate.
What share of students in San Mateo County qualify for free or reduced lunch?
Roughly 34.0% of students in San Mateo County public schools qualify for free or reduced-price lunch, a common proxy for low-income enrollment. This is lower than the California county average of 60.6%.
What is the student-teacher ratio in San Mateo County schools?
Across San Mateo County public schools, the enrollment-weighted student-teacher ratio is approximately 20.4 to 1.

San Mateo County school rankings

Largest schoolsAll rankings →
DATA · Census ACS 5-year · NCES Common Core of Data