One of a series of materials developed by Project APT (Administrators, Parents, and Teachers/Assessment, Programing, and Training), a program designed to foster home/school coordination in educational planning and program inplementation for severely mentally retarded and/or multiply handicapped students; the booklet provides the Developmental Achievement Wheel, an instrument designed to assess the functional level of multiply handicapped students. The wheel format gives an overview of the student's performance in the following six areas--cognition, language, gross motor, fine motor, self help, and socialization. Made up of five concentric rings (0 to 6 months, 6 months to 1 year, 1 to 2 years, 2 to 4 years, and 4 to 6 years) the wheel permits the recording of past, present, and future levels of performance with the use of developmental milestones. Suggested equipment to be used in each area at each age level is listed and the assessment instrument worksheet is included. (PHR)