Evaluating a Social and Communication Intervention for Preschoolers

Inclusion Criteria: For Teachers: \- Work in an ASD preschool classroom within a cooperating Baltimore County Public School. For Children: * Meet Autism Diagnostic Observation Schedule-Generic (ADOS; Lord et al., 2002) and expert clinical judgment criteria for ASD * Have an IQ or Developmental Quotient of at least 40 based on the Early Learning Composite from the Mullen Scales of Early Learning (Mullen, 1995) * Be enrolled in a participating Baltimore County Public School ASD preschool classroom * Be between the ages of 3 and 6 and enrolled in a participating ASD preschool classroom. Exclusion Criteria: Children and educators may be taken out of the study if they: * Are unable to comply with the study protocol * Change schools due to relocation Children may also be taken out of this study if they: * Sustain a head injury or other serious physical injury during the study * Are not being brought in for testing as designated in the protocol