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Diagnostic Centers

Provides comprehensive assessments to special education students and staff development and training services to local educational agencies.
When Specialized Assessment Services are Needed, California’s Diagnostic Centers Can Help

Unique to California, the Diagnostic Centers are the California Department of Education’s foremost providers of specialized services and assistance to special education students, their families, and local education agencies (LEAs). The Diagnostic Center Teams are committed to providing a quality service that makes a positive difference for students, their families, and educators.

Established more than 50 years ago, the Diagnostic Centers provide high quality assessments to hundreds of students each year, as well as professional development opportunities for families and educators throughout the state.

California’s three Diagnostic Centers, located in Fremont, Fresno, and Los Angeles, can help LEAs with their most difficult-to-serve special education students ages 2.9 through 22 years. These services are provided at no charge to the LEA or family.

Referrals may be made by the school district when:

Providing Comprehensive, In-Depth Assessments
Dynamic, Transdisciplinary Process

Each assessment is carefully planned and is:

Assessment in a Variety of Settings

A student may be assessed in the school, at the Center, or in a combination of both environments.

Parents as Partners

Collaboration with parents is an essential, highly valued, and integral part of the assessment process. Parents assume an active role in the team process through input into the referral questions, participation in portions of the assessment, and extensive interviews with Diagnostic Center assessment staff.

Sharing Assessment Results

After completion of the assessment, Diagnostic Center staff members meet with families and school staff to share assessment findings, including practical teaching strategies and interventions. In addition, the district and parents receive a comprehensive written report.

Linking Assessment Results With Instruction
Consultation and Instructional Support

The Diagnostic Center offers a variety of consultative and/or technical assistance services to school staff to assist with students who have been previously served by the Diagnostic Center.

Additional Services
Regional Workshops, Conference Presentations

Each Diagnostic Center offers state-of-the-art professional development and training programs for both district staff and parents. These presentations and workshops are typically prescheduled through regional workshops and in-services, presentations at major state and national professional conferences, and sponsorship of major conferences on a regional or statewide basis.

For More Information

Each Diagnostic Center offers a detailed information packet describing its services. For more information or to discuss the possibility of a specific referral, please contact the Diagnostic Center within your service delivery area. Contact information is below.

Diagnostic Center Counties Served
Northern California External link opens in new window or tab.
39100 Gallaudet Drive
Fremont, CA 94538
510-794-2500
Del Norte, Siskiyou, Modoc, Humboldt, Trinity, Shasta, Lassen, Mendocino, Tehama, Plumas, Glenn, Butte, Sierra, Lake, Colusa, Sutter, Yuba, Placer, Nevada, Sonoma, Napa, Sacramento, El Dorado, Solano, Amador, Alpine, Marin, Contra Costa, San Francisco, Alameda, San Mateo, Santa Clara, Santa Cruz, Monterey, and San Benito.
Central California External link opens in new window or tab.
1818 West Ashlan Avenue
Fresno, CA 93705
559-243-4047
San Luis Obispo, northern Kern, Tulare, Kings, Fresno, Madera, Mariposa, Merced, Stanislaus, San Joaquin, Tuolumne, Calaveras, Amador
Southern California External link opens in new window or tab.
4339 State University Drive
Los Angeles, CA 90032
323-222-8090
Mono, Inyo, southern Kern, Santa Barbara, Ventura, Los Angeles, San Bernardino, Orange, Riverside, San Diego, Imperial

Available Translations of Diagnostic Centers Information

Questions:   State Special Schools and Services | 916-327-3850
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