The PREP Program Field Test Project had four major objectives: the development, implementation, and formative evaluation of an inservice training package designed to help teachers of young moderately mentally handicapped children implement an individualized instruction play program based on the PREP Program motor development materials and methods; the provision of ongoing field consultations on the implementation and monitoring of the program to the teachers during selected physical education periods over the program implementaion period; the formative evaluation of the PREP Program materials and methods during the program evaluation period; and the completion of an object evaluation of teacher feedback on the use of the PREP materials and methods. Field test procedures included four inservice training sessions, implementation of the PREP Program Instructional Model which consists of six major program phases (including assessment, prescription, and task step selection); and program evaluation. Results of the field implementation project were analyzed in terms of inservice training, pupil progress, and program evaluation. Among conclusions were that the teachers implement the PREP Program, that the program consultant provided valuable leadership and advice throughout the implementation period, and that the teachers agreed that the PREP Program helped them in what to teach as they stressed the value and effectiveness of the available task sequences and requested that more skills be task analyzed for inclusion in the program. Among appended materials are a schedule of classes, inservice evaluation forms, a free play inventory, individual student profile, guidelines for program implementation, recommended equipment, a program consultant activity log, and interrating of teachers' answers on the questionnaire and interview results. (SBH)