Summarized is the school psychologist's role in the interdisciplinary approach to screening preschool children for the identification of present or potential impairments. Provided is a listing of test materials (indicated as either individually or group administered) for the following areas: IQ estimate, visual discrimination and memory, receptive language, expressive language, and inner language. A brief checklist is provided to evaluate the child's behavior in four areas--attention, gross motor behavior, fine motor coordination, and social skills. Materials to give to parents are suggested, and a checklist of basic readiness skills (such as knowledge of right and left) is appended. (SB)