A+
Northgate High
PublicHighGrades 9–12
425 Castle Rock Rd., Walnut Creek, CA 94598 · (925) 938-0900 · Part of Mount Diablo Unified School District
Students
1,546
Students per teacher
23:1
Free or reduced lunch
22%
Setting
City
Grades
9–12
What stands out about Northgate High
- School Grade A+: near the top of California’s public schools
- Math proficiency 31 pts above the state
- Reading / language arts 36 pts above the state
- Larger classes: 23:1 students per teacher
Test scores
EDFacts via Urban Institute Education Data Portal (SY2020-21) · 2020–21Math proficiency65%
State average 33.6%
Reading / language arts85%
State average 48.6%
Location
Directions ↗
425 Castle Rock Rd., Walnut Creek
Students
Enrollment by grade
Grade 9399
Grade 10397
Grade 11373
Grade 12377
Enrollment over time
1,492’20
1,496’21
1,507’22
1,535’23
1,546’24
Up 3.6% since 2020.
Who goes here
White 46%Two or more races 19%Asian 17%Hispanic 17%Black 1%Native Hawaiian/Pacific Islander <1%
As reported to NCES, share of students with a reported race or ethnicity.
What neighbors say
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Parents talk
Conversations in Town Square that mention Northgate High.
Other schools in Mount Diablo Unified School District
School facts: U.S. Department of Education (NCES), 2024-2025 school year. Scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). The School Grade is our own summary of state test results. Neighbor ratings are opinions, not an official measure of school quality.