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Public9-12High
Hillsdale High
3115 Del Monte St., San Mateo, CA 94403·San Mateo County·San Mateo Union High
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Overview
Hillsdale High is a public school (high) serving grades 9-12 in San Mateo, San Mateo County. Part of San Mateo Union High.
School data from the California Department of Education (public & charter 2025-26, private 2024-25).
At a glance
1,517
Enrollment
9-12
Grades
Public
Sector
Location
3115 Del Monte St., San Mateo, CA 94403
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School data from the California Department of Education (public & charter 2025-26, private 2024-25).