Mt. Diablo High
Concord, CA · Mt. Diablo Unified
Regular public school · Grades 9-12 · Suburb, large
1,092nd of 1,528 California high schools statewide · better than 29%· Stable
2450 Grant St., Concord, CA 94520
(925) 682-4030Official website ↗NCES ID 062637003960Directory 2023–24
SchoolRow ranks Mt. Diablo High 1,092nd of 1,528 California high schools for 2024–25, based on CAASPP 2024–25 English and Math results — better than 29% of high schools statewide. Its statewide percentile went from 29th in 2015 to 29th in 2025.
Percent meeting or exceeding the state standard, CAASPP 2024–25 · 298 students tested
Racial and ethnic breakdown of 1,477 students (2023–24, NCES) — history since 1987, with comparable seven-category changes from 2010
| Group | Trend | 2010 | 2023 | Change |
|---|---|---|---|---|
| Hispanic | 57.8% | 74.2% | ▲ 16.4 pts | |
| Black | 12.0% | 8.1% | ▼ 3.9 pts | |
| Asian | 11.8% | 7.6% | ▼ 4.2 pts | |
| Two or more races | 1.5% | 4.5% | ▲ 3.0 pts | |
| White | 14.8% | 3.7% | ▼ 11.1 pts | |
| Pacific Islander | 1.8% | 1.7% | ▼ 0.1 pts |
NCES history for this school begins in 1987. Race categories changed by 2010: earlier data combines Asian and Pacific Islander students and does not consistently identify multiracial students. The chart retains that history, while the change table uses 2010 onward.
Typical home value $615K in zip 94520 as of 2026-05 · trend since 2000
Data Provided by Zillow Group
Closest same-level schools, with 2024–25 state rank · ▲▼ = points better or worse than Mt. Diablo High
- #1318Olympic HighMt. Diablo Unified · 0.5 mi away1,318th of 1,528
ELA 16% ▼22 · Math 5% ▼7Compare - –Crossroads HighMt. Diablo Unified · 0.5 mi awayCompare
- –Glenbrook AcademyMt. Diablo Unified · 0.9 mi awayCompare
- #364College Park HighMt. Diablo Unified · 2.3 mi away364th of 1,528
ELA 61% ▲23 · Math 44% ▲32Compare - #977Concord HighMt. Diablo Unified · 2.6 mi away977th of 1,528
ELA 43% ▲5 · Math 17% ▲5Compare - –Mt. McKinleyContra Costa County Office of Education · 2.8 mi awayCompare
- #1192Ygnacio Valley HighMt. Diablo Unified · 3.3 mi away1,192nd of 1,528
ELA 29% ▼9 · Math 12% =Compare - –Prospect High (Continuation)Mt. Diablo Unified · 3.7 mi awayCompare
What school district is Mt. Diablo High in?
Mt. Diablo High is part of the Mt. Diablo Unified district in Concord, California.
Is Mt. Diablo High a good school?
SchoolRow ranks Mt. Diablo High 1,092nd of 1,528 California high schools (better than 29% statewide) based on 2024–25 test results (CAASPP 2024–25).
What is the racial makeup of Mt. Diablo High?
Hispanic 74%, Black 8%, Asian 8%, Two or more races 5% (1,477 students, 2023–24).
How much do homes near Mt. Diablo High cost?
The typical home value in zip code 94520 is $615K as of 2026-05 (Zillow ZHVI).
Sources: state education department data (CAASPP 2024–25, low-income, chronic absenteeism), National Center for Education Statistics via the Urban Institute (enrollment, demographics, staffing), Zillow Group (home values). Rankings are computed by SchoolRow from state English and Math results within grade level; they measure test performance, not everything that makes a school good.