CLASS is one of the resource center in southwestern Pennsylvania.

CLASS was founded in 1951 by a group of parents, medical personnel, educators, and other stakeholders. It was originally chartered as an affiliate of United Cerebral Palsy to serve Allegheny County and the City of Pittsburgh. In 2013, CLASS became independent of the National UCP Organization. Growing from a small diagnostic clinic linked to Children’s Hospital, CLASS now reaches thousands of people directly and indirectly in multiple counties across southwestern Pennsylvania.