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Mt. Diablo Unified


At a glance
493rdof 968 California districts▲ 266
Better than 49% of California districts
1936 Carlotta Dr.
Concord, CA 94519-1397
·(925) 682-8000·All California district rankings →
Statewide performance 2018–2026
2026: better than 49.1% of districts
51
Schools
29,210
Students
5
5-star schools
Top rankedWalnut Acres Elementary231st of 5,804 California elementary schools
▲
Biggest riser
Mountain View Elementary up 1,384 spots statewide this year
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Smallest classes
Horizons School: Independent Study 10.4 students per teacher
SchoolDigger ratings
5★
4★
3★
2★
1★
0★
5 schools without a SchoolDigger rating (too few tested students)
Summary:

The district summary lists 50 schools in Mt. Diablo Unified; the supplied records cover 48 schools, from elementary grades through high school, as well as alternative and specialized settings. Results vary widely within each school type: in 2025–26, for example, conventional high-school ELA proficiency ranged from 30% to 83%, while K–5 math ranged from 8% to 82%. The most important finding is that families will encounter sharply different reported proficiency levels within the same district.

Among conventional high schools, Northgate High led in ELA, math and science, at 83%, 61% and 54%; Mt. Diablo High was lowest, at 30%, 12% and 15%, respectively. Northgate was 34 percentage points above the state in ELA, while Mt. Diablo High was 19 points below the state in ELA, 26 below in math and 21 below in science. Among middle schools, Diablo View Middle led ELA at 77%, and Foothill Middle led math and science at 65% and 60%; Riverview Middle had the lowest ELA and math, and Oak Grove Middle the lowest science. For K–5 schools, Walnut Acres Elementary led ELA and math at 79% and 82%, while Sequoia Elementary led science at 66%; Shore Acres Elementary was lowest in ELA and math, and Wren Avenue Elementary in science.

Recent results improved for conventional high schools on average: from 2024–25 to 2025–26, their ELA, math and science averages rose by about 2, 3 and 4 percentage points, gaining ground on state results in all three subjects. Middle-school ELA also improved, but its math average dipped slightly and science gains trailed the state’s, widening the relative gaps in those subjects. Individual schools moved in different directions: Mountain View Elementary gained 10 points in ELA and 25 in science, while Valle Verde Elementary fell 9 points in math and 11 in science. Income figures are context, not an explanation for results: in 2024–25, Sequoia Middle was 50% free/reduced lunch eligible and scored above the state in all three subjects, while Riverview Middle was 89% free/reduced lunch eligible and scored below the state in all three. These comparisons describe school-level results and are not student-weighted district averages.

Ranking:
Map legend
E Elementary M Middle H High A Alternative P Private




SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the California Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.

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