California Dept of Education   A-Z Index  |   Search  |   Help

Diagnotic Centers LogoDiagnostic Centers Header
Growth for Education through Information

California Department of Education's Diagnostic Centers provide high quality services to special education students, their families and local educational agencies (LEAs). Authorized by the California legislature in 1944 and established regionally, the three centers are located in Los Angeles, Fresno, and Fremont. Services are provided by expert, transdisciplinary teams of diagnostic professionals, who address the unique educational needs of California's most difficult to serve special education students.

Services include:

  • Comprehensive, state-of-the-art assessment and educational planning services to assist local school districts (LEAs) in addressing the needs of their most complex special education students
  • Technical assistance and consultation in program and instructional design and delivery
  • Professional development opportunities for teachers, administrators, special education staff, families and service agency personnel

Referrals for assessment services must be made by the student's school district, county office of education, or SELPA. Parent referrals are not accepted. Eligible students are those students who:

  • are enrolled in special education,
  • are not progressing despite LEA efforts,
  • present a complex learning or behavioral profile, and
  • for whom the LEA requires additional diagnostic information to assist in defining appropriate educational goals and teaching strategies.

Requests for technical assistance, consultation services, and professional staff development may be made by LEA special education administrators, SELPA directors, county office of education administrators, members of Regional Coordinating Councils, local colleges and universities, parent organizations, and service agencies. Diagnostic Center services are provided at no charge.

Services Offered


*Tri-Center Year End Report

For more information . . .
Diagnostic Center Northern California
39100 Gallaudet Drive
Fremont CA 94538
Robin L. Zane, Director
(510) 794-2500
Diagnostic Center Central California
1818 West Ashlan Avenue
Fresno CA 93705
Melanie Johnson, Director
(559) 243-4047
Diagnostic Center Southern California
4339 State University Drive
Los Angeles CA 90032
Valerie Johnson, Director
(323) 222-8090

Back to Top

Conditions of Use | Privacy Policy | Web Services Office

CDE Valid: Logo for Web Standards at the California Department of Education