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High SchoolsGrades 9-12

Mt. Diablo High

Mt. Diablo Unified · Contra Costa County · 2450 Grant Street, Concord, CA 94520-2251

(925) 682-4030 · www.mdusd.org

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1/10
#1113
Rank 1113 out of 1,227
Top 91%
English Language Arts2/10 · #1032 · 16th percentile
Mathematics1/10 · #1118 · 9th percentile
Science1/10 · #1169 · 10th percentile

English Language Arts

Math Trend

Science Trend

School Overview

Mt. Diablo High sits in the heart of Concord, a sprawling East Bay city where families tend to put down real roots and stay for the long haul. The school serves a genuinely diverse student body, and while test scores reflect some of the academic challenges common to many urban comprehensive high schools, it offers the kind of real-world, mixed-community experience that can prepare students well for life beyond graduation. Families who value diversity, affordability, and proximity to BART and the broader Bay Area often find Concord a practical and welcoming place to raise kids.

Student Demographics

271 students tested · 2024-25 school year

Ethnicity

Hispanic
199 (73%)
African American
30 (11%)
Asian
12 (4%)
White
12 (4%)
Filipino
11 (4%)
Pacific Islander
5 (2%)
Other
2 (1%)

Key Indicators

English Learners112 (41%)
Socioeconomically Disadvantaged225 (83%)
Students with Disabilities41 (15%)

Staff & Teachers(2024-25)

1,397
Enrollment
70.2
Teachers (FTE)
19.9:1
Student-Staff Ratio
3
Administrators (FTE)
24.9
Avg Class Size*(2023-24)

Graduation Rate

78%of students graduate within 4 years

Graduation Rate Trend

College Readiness

Advanced Placement (AP) and International Baccalaureate (IB) programs offer college-level coursework and are a key indicator of academic rigor.

11
AP Courses
offered
13.7%
AP Participation
of students
205
AP Enrollment
students

Source: Civil Rights Data Collection (CRDC) 2021-22

Athletics

Red Devils · CIF North Coast Section

26
varsity sports
9 boys
11 girls
BaseballBasketball (Boys)Basketball (Girls)Beach Volleyball (Girls)Cross Country (Boys)Cross Country (Girls)Dual WrestlingFlag Football (Girls)

Source: CIF Home Campus 2025-26

Community Enrichment Programs

This supplementary score measures the availability of enrichment programs — such as tutoring, music, dance, sports, and arts — within 3 miles of the school. Schools in communities with more diverse and accessible programs score higher.

Nearby Programs8/10 · #520 · 76th percentile

145 programs within 3 miles. Ranked among High Schools in California.

Nearby Libraries

No programs found