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B−

Mt. Diablo High

PublicHighGrades 9–12

2450 Grant St., Concord, CA 94520 · (925) 682-4030 · Part of Mount Diablo Unified School District

Concord’s School Grade B better than 62% of California school districts

Directions
Students
1,397
Students per teacher
20:1
Free or reduced lunch
80%
Setting
Suburb
Grades
9–12
The gist

What stands out about Mt. Diablo High

  • Its own letter, B−: better results than 50% of California’s public schools
  • Math proficiency 12 pts below the state
  • Larger classes: 20 students per teacher
  • Enrollment down 10.8% since 2020–21

On the path

Where Concord kids come from and go next. The whole path →

6–84 middle schoolsDepends on your address
9–12Mt. Diablo HighYou are here

Test scores

2020–21
Math proficiency22%
State average 33.6%
Reading / language arts47%
State average 48.6%

Its own letter, B−, places these results among California’s 3,615 public schools with results. Source: EDFacts via Urban Institute Education Data Portal (SY2020-21).

Location

Directions ↗

2450 Grant St., Concord

Students

Enrollment by grade
Grade 9342
Grade 10366
Grade 11355
Grade 12334
Enrollment over time
1,567’20
1,513’21
1,498’22
1,477’23
1,397’24

Down 10.8% since 2020–21.

Who goes here
Hispanic 74%Black 8%Asian 8%White 5%Two or more races 4%Native Hawaiian/Pacific Islander 1%

As reported to NCES, share of students with a reported race or ethnicity.

Parents talk

Questions and answers about Mt. Diablo High from Concord families.

Other schools in Mount Diablo Unified School District

The district →
Hidden Valley Elementary
Elementary · Grades K–5 · Martinez
B+
831 students27:1
Mt. Diablo Elementary
Elementary · Grades K–5 · Clayton
A
739 students30:1
Meadow Homes Elementary
Elementary · Grades K–5 · Concord
D
732 students28:1
Valhalla Elementary
Elementary · Grades K–5 · Pleasant Hill
A−
721 students28:1
Walnut Acres Elementary
Elementary · Grades K–5 · Walnut Creek
A
689 students29:1
Bancroft Elementary
Elementary · Grades K–5 · Walnut Creek
A
672 students27:1

School facts: U.S. Department of Education (NCES), 2024–2025 school year. Test scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). A school’s letter is our own summary of its reading and math results against California’s other public schools; Concord’s School Grade is built from its districts’ results. Map: © OpenStreetMap contributors.