Diagnostic Center, Southern California
Diagnostic Center, Southern California
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A Message from the Director

Welcome to our website!

Valerie Johnson, Psy. D., Director.
Valerie Johnson, Psy. D.

The Diagnostic Center, Southern California is one of three regional assessment centers operated through the California Department of Education.

The Diagnostic Centers were authorized by the California State Legislature in 1943 to provide services for children with cerebral palsy. By 1955, the scope was broadened to include children with other neurological handicaps. The two other Centers are located in Fremont and Fresno.

Our Center provides assessment services to over 350 local educational agencies (school districts, County and SELPA programs) within eleven Southern Californian counties.

In addition to student assessments, the Center provides training, consultation, and technical assistance services to schools within our catchment area. All Diagnostic Center services are provided at no charge to local educational agencies and families.

We employ a transdisciplinary team of highly trained and experienced specialists from the fields of education, psychology, speech/language pathology, motor development, and pediatric medicine. Being a referral agency for a large portion of California's schools, our staff routinely works with children with unusual, perplexing and challenging educational needs.

Our team is committed to providing a quality service that makes a positive difference for students, their families and educators.


COVID-19 Read about our services...

Due to the COVID-19 outbreak, the Diagnostic Center, Southern California is not currently providing Center or Field-based assessment services. We are, however, accepting referral applications and providing services based on a service delivery model aligned with current public health agencies and the California Department of Education guidance. All referral applications and requests for assessment are evaluated on a case by case basis and any services rendered by the Diagnostic Center, Southern California are individually designed to address referral questions and concerns. As the situation with COVID-19 evolves we will continue to adjust our service delivery model to ensure the safety of staff, students, and the families we serve. Please send us a message via our Contact Page if you have additional questions.

Diagnostic Centers' Reopening Guidance Overview (PDF)Link opens in a new window or tab.