Interagency related services for special education are sometimes referred to as Assembly Bill (AB) 3632 services or Government Code Chapter 26.5 services. The most common name for these services, AB 3632, is the name that will be used in this chapter to refer to any of the interagency-related services. In 1986, the California Legislature decided to use state and county agencies — other than the school district — to provide certain related services to maximize and better coordinate public resources to support students with disabilities.

Rather than have districts responsible for certain health services, the Legislature decided to enter into interagency agreements with other state agencies to provide services to students. The primary interagency related services are physical and occupational therapy (PT/OT), which are offered by California Children’s Services (CCS).