San Mateo Union High School District
The San Mateo Union High School District is a high school district headquartered in San Mateo, California that serves most of San Mateo County. The district serves the cities of San Mateo, Foster City, Hillsborough, San Bruno, Millbrae, and Burlingame.
Schools
SMUHSD serves San Francisco Bay-side cities in the central part of San Mateo County; northern and southern cities are served by the Jefferson Union High School District / South San Francisco Unified School District and Sequoia Union High School District, respectively. High school districts on the Pacific coast side of San Mateo County include Cabrillo Unified School District and La Honda-Pescadero Unified School District.The district consists of six public high schools, one continuation high school, one alternative high school, one adult school, and one charter school in San Bruno, Millbrae, Burlingame, and San Mateo. The district serves a total population of 8,400 students with a staff of more than 900 employees; the District Adult School has an additional 10,000 part-time students. The public schools participate in the Peninsula Athletic League.
The oldest high school in San Mateo County is Sequoia High School in Redwood City. It was founded in 1895. The next oldest school in the county is San Mateo High School, which opened in 1902. Within the district, SMHS was followed by Burlingame High School, which opened in the early 1920s, and then Capuchino High School in San Bruno in 1950. The district added more public high schools in the mid-50s and early 1960s as the population of the Peninsula grew: Hillsdale High School and Aragon High School in San Mateo, Mills High School in Millbrae, and Crestmoor High School in San Bruno. Due to declining enrollment, Crestmoor was closed in 1980; some of the buildings were later used for Peninsula High School, a continuation school. SMUHSD sold the Crestmoor campus in 2025 and moved Peninsula to Burlingame.
The San Mateo Middle College High School is an alternative education program, begun in 1998, which is attended by 35 juniors and 35 seniors selected from high schools in the district. These students take both high school and college courses at College of San Mateo.
The San Mateo Adult School is an adult school with an annual enrollment of over 14,000 whose mission is to "develop skilled workers, strong families, and successful communities by offering opportunities to learn at every stage of adult life."
Design Tech High School is a charter school with open enrollment for all students in California which opened in 2014; the first class graduated in 2018. Enrollment is limited to 150 incoming freshmen ; transfers for sophomores are limited, and no transfers are available for juniors and seniors. If applicants exceed capacity, a lottery is held to determine enrollment. Oracle Corporation announced in 2015 that it would build a public high school building for d.tech on its campus in Redwood Shores; the new $43 million building was completed in late 2017, replacing the schools initial space and interim campus. Students moved into the new building in January 2018.
| Name | Year | Address | City | Notes | Image |
| Aragon | 1961 | 900 Alameda de las Pulgas | San Mateo | ||
| Burlingame | c.1920 | 1 Mangini Way | Burlingame | ||
| Capuchino | 1950 | 1501 Magnolia Ave | San Bruno | ||
| Hillsdale | 1955 | 3115 Del Monte St | San Mateo | ||
| Mills | 1958 | 400 Murchison Dr | Millbrae | ||
| Peninsula | 1980 | 860 Hinckley Rd | Burlingame | Relocated to Burlingame in 2021. Previously located on the former campus of Crestmoor High School | |
| San Mateo | 1902 | 506 N. Delaware St | San Mateo | ||
| Adult School | 1917 | 789 E. Poplar Ave | San Mateo | Provides education for traditionally underserved communities. | |
| Middle College | 1998 | 1700 W. Hillsdale Blvd | San Mateo | Concurrent enrollment for up to 35 juniors and 35 seniors earning college credits at College of San Mateo while attending high school courses. | |
| Design Tech | 2014 | 275 Oracle Pkwy | Redwood City | 'd.tech' is a charter school that relocated to a new building in Redwood City in January 2018 |
Board of trustees
The San Mateo Union High School District is governed by a five-member board of trustees, whose members are elected by voters residing in the district to serve up to two four-year terms. The Board is responsible for establishing educational goals and standards, approving curriculum and the school district budget, and appoints a superintendent to manage day-to-day administration.The current trustees are Peter Hanley, Linda Lees Dwyer, Greg Land, Marc Friedman, and Robert Griffin. Former Board President Dave Pine was elected to the District 1 seat on the San Mateo County Board of Supervisors, replacing Mark Church in an all-mail special election which ended on May 3, 2011.