The problem of this study was to standardize the Basic Movement Performance Profile with male and female profoundly retarded residents from the ten Texas state schools for the mentally retarded. To standardize the Basic Movement Performance Profile, the following objectives were formulated: 1. To determine if the test items found in the Basic Movement Performance Profile were valid and appropriate items to measure the basic movement skills of profoundly retarded residents of state institutions. 2. To establish the reliability of the Basic Movement Performance Profile test items utilizing the test-retest method with thirty profoundly retarded males and thirty profoundly retarded females at the Denton State School for the Mentally Retarded. 3. To establish performance level norms utilizing percentile ranks for both sexes on the Basic Movement Performance Profile.