Mt. Diablo Unified: special education data and contacts
How to ask this district for a free special-education assessment, and what it reports to the California Department of Education each October.
Asking Mt. Diablo Unified for an assessment
Public school districts must assess children 3 and older who may need special education, at no cost, including children who aren't in public school yet. For a child in private school, the district where the school is located may handle the assessment; call to confirm.
- Write to the district's special education office, or your child's principal, asking for an assessment.
- The district has 15 days to send you an assessment plan.
- After you sign the plan, it has 60 days to assess your child and meet with you.
Days between school sessions and school vacations longer than five school days don't count. Keep a copy of everything you send.
Write your request letterDistrict office
We haven't imported this district's office contact yet. CDE's California School Directory lists it.
We send your address to the U.S. Census Bureau's geocoder to find its location, then match it to CDE district boundaries. We don't store or log it.
What the district reports
On Census Day each October, California public schools report how many students have an active IEP, grouped by each student's primary disability category. Each student is counted once.
Contra Costa County: 23.9% · California: 23.3%
California Department of EducationWhat this measures: Counts students whose primary special-education eligibility category is reported by public schools on Census Day. It is not a count of all autistic children, not a clinical diagnosis count, and not a prevalence rate.
Show the numbers
| Period | Mt. Diablo Unified |
|---|---|
| 2022-23 | 809 |
| 2023-24 | 936 |
| 2024-25 | 1,055 |
| 2025-26 | 1,179 |
Show the numbers
| Period | Mt. Diablo Unified |
|---|---|
| 2022-23 | 1,532 |
| 2023-24 | 1,502 |
| 2024-25 | 1,484 |
| 2025-26 | 1,431 |
Show the numbers
| Period | Mt. Diablo Unified |
|---|---|
| 2022-23 | 781 |
| 2023-24 | 800 |
| 2024-25 | 883 |
| 2025-26 | 914 |
Show the numbers
| Period | Mt. Diablo Unified |
|---|---|
| 2022-23 | 565 |
| 2023-24 | 569 |
| 2024-25 | 611 |
| 2025-26 | 641 |
English learners with an IEP: 1,196. Families can ask for assessment and meetings in their home language, with an interpreter at no cost.
Does the district meet its legal timelines?
Each year CDE checks every district against federal compliance indicators. Two of them concern evaluations: deciding eligibility within 60 days of a signed assessment plan, and having an IEP in place by age 3 for children leaving Early Start.
Reported compliance is not the same as appointment wait time. These rates come from the district's own records of when steps were completed. They don't measure how long families wait to be heard, or the quality of the assessment.
Initial evaluations completed within the 60-day timeline
92.2%2024-25 annual performance report · target not met
2023-24: 88.0%
Children moving from Early Start with an IEP in place by age 3
63.9%2023-24 annual performance report · target not met
CDE's 2024–25 report reprinted the 2023–24 Indicator 12 rates, so we show them once.
What this measures: A compliance rate CDE calculates from records the district submits, for a 100% target set by federal law. CDE publishes the rate only, not how many children were counted, so a small district can swing widely from one year to the next. "Not calculated" means CDE judged the number of children too small. Reported compliance is not the same as appointment wait time.
Where students in special education learn
Each student's IEP placement on Census Day: how much of the day they spend in a regular class, or whether they are taught in a separate school or a preschool setting.
What this measures: Program setting reflects each student's IEP placement on Census Day. Districts with more preschool or more students with significant needs will show different mixes, so a setting mix is not a measure of school quality.
Classification counts are not autism rates or school ratings.
Students whose IEP lists a category as primary. A student served under speech or another category, or without an IEP, is not in the autism count.
Size, grades served, preschool programs, and county-run programs all change the mix. A higher count is not a sign of better or worse schools.
CDE withholds small cells to protect students. Those show as suppressed, never as zero.
Other districts in Contra Costa County
- Acalanes Union High
- Antioch Unified
- Brentwood Union
- Byron Union Elementary
- Canyon Elementary
- Contra Costa County Office of Education
- John Swett Unified
- Knightsen Elementary
- Lafayette Elementary
- Liberty Union High
- Martinez Unified
- Moraga Elementary
- Oakley Union Elementary
- Orinda Union
- Pittsburg Unified
- San Ramon Valley Unified
- SBE - John Henry High
- Walnut Creek Elementary
- West Contra Costa Unified
Where these numbers come from
Figures are copied from public files without adjustment. Suppressed cells stay blank. Each source's own definitions apply.
Read the methodology- Public schools · CDESpecial Education Enrollment by Program SettingCalifornia Department of Education, DataQuest Special Education Enrollment by Program Setting downloadable files
- Editions used
- 2022-23, 2023-24, 2024-25, 2025-26
- Retrieved
- Oct 16, 2026
- License
- Public data; CDE conditions of use
- Pipeline run
cde-sped-20261016175952-b240, cde-sped-20261016175955-607a +2
- Public schools · CDESpecial Education Annual Performance Report Measures (LEA reports)California Department of Education, Special Education Division, Local Level Annual Performance Report
- Editions used
- 2023-24, 2024-25
- Retrieved
- Oct 17, 2026
- License
- Public data; CDE conditions of use
- Pipeline run
cde-apr-20261017225142-d83e, cde-apr-20261017225156-f77d