- Glenbrook Academy — 0.2 mi · Grades 6–12 · 21 students
- Holbrook Language Academy — 0.5 mi · Grades K–8 · 501 students
- Sun Terrace Elementary — 0.6 mi · Grades K–5 · 418 students
- Mt. Diablo High — 0.7 mi · Grades 9–12 · 1,397 students
- Crossroads High — 1.0 mi · Grades 7–12 · 12 students
- Olympic High — 1.0 mi · Grades 9–12 · 233 students
- Wren Avenue Elementary — 1.4 mi · Grades K–5 · 349 students
- Monte Gardens Elementary — 1.7 mi · Grades K–5 · 562 students
| Metric | Mount Diablo Unified School District | National Average | Comparison |
|---|---|---|---|
| Student Enrollment | 29,201 | 3,544 | ↑ Larger than avg |
| Number of Schools | 52 | 7 | Varies by district |
| Per-Pupil Spending | $16,614/yr | $17,619/yr | ≈ Near avg |
| District Type | Education Service Agency | Public District | — |
| Overall Rating | 7/10 — Good | — | Above average |
🔢 Show the math behind this rating
Ranked against 963 rated districts in CA → 60th percentile → 7/10.
Source: California Dept. of Education CAASPP Smarter Balanced, 2023–24 school year. Full methodology →
About Mount Diablo Unified School District
Mount Diablo Unified School District is the public school district assigned to zip code 94520 in Concord, California. Serving students from Kindergarten–12th, this district is the primary public education system for families living in and around zip code 94520. The sections below cover the district’s resources, scale, rating, and everything families need to know about enrollment and school assignment.
Understanding the 7/10 Rating
With a rating of 7/10 (above average), Mount Diablo Unified School District ranks among California’s above average-rated school systems. Our ratings are based on state assessment results — the share of students scoring proficient or above in reading and math, as reported in California’s CAASPP Smarter Balanced assessments (2023–24 school year). We average each district’s reading and math proficiency, then rank it against other districts in the same state to produce a 1–10 score. Because California is compared only against itself, the rating reflects how this district performs relative to its in-state peers.
Mount Diablo Unified School District earns an above-average rating, with reading and math proficiency rates stronger than most other districts in California. Above-average districts generally show solid and consistent academic results across their schools. Families considering this area will find a district with meaningful academic strengths. Research the specific schools assigned to your address — even above-average districts have variation between individual buildings.
Enrollment for Families in Zip Code 94520
Children in zip code 94520 are assigned to Mount Diablo Unified School District for public school enrollment, covering grades Kindergarten–12th. School assignments are address-specific — your elementary, middle, and high school placements depend on your exact street address within zip code 94520, not just your neighborhood. Two homes on opposite ends of the same zip code may be assigned to different schools within the same district.
To confirm your specific school assignments, contact Mount Diablo Unified School District at (925)682-8000 or visit the district’s official website. Typical enrollment documents include proof of address, a government-issued birth certificate, immunization records, and any existing school records or IEP documentation. If your child has an IEP or 504 plan, bring that documentation to enrollment — California districts are required to continue services within a reasonable period. Fall enrollment windows typically open in late winter or early spring; contact the district for exact dates and required steps.
School Districts and Home Values in Concord
For families considering a purchase in the Concord area, district assignment matters financially. Because Mount Diablo Unified School District serves zip code 94520, district assignment still factors into home-pricing comparisons between zip code 94520 and neighboring areas. District boundaries are address-specific — verify the exact district assignment for any property you’re seriously considering rather than assuming based on the neighborhood. A single block can place two adjacent homes in different districts with different ratings and different annual property tax implications.
Use the property tax estimator on this page to calculate estimated annual tax obligations based on your target purchase price. In California, property taxes are a primary funding source for public schools — your tax payments directly support Mount Diablo Unified School District programs and staff. Understanding both district quality and the associated tax burden is essential financial due diligence before committing to any home in zip code 94520.
Data Sources and Accuracy
All district information on this page is sourced from the NCES Common Core of Data (CCD) 2024–2025, the U.S. Department of Education’s annual census of all public school districts — the same dataset used by researchers, journalists, and policymakers to analyze American public education. District boundaries, school assignments and phone numbers are updated annually when NCES publishes new data, typically in spring; per-pupil spending comes from the US Census Bureau's Annual Survey of School System Finances, released about two years after the fiscal year it covers. Always verify your specific school assignment and enrollment requirements directly with Mount Diablo Unified School District before making any housing or enrollment decision based on zip code 94520 data.