This school district utilized the generalized academic simulation programs (GASP) to assist in making decisions regarding the kinds of facilities that should be constructed at Pilchuck Senior High School. Modular scheduling was one of the basic educational parameters used in determining the number and type of facilities needed. The objectives of this study were to investigate--(1) the major questions to be answered before simulating the program with GASP, (2) the quality of the decisions related to the space requirements, and (3) the economies achieved by using GASP. A comparison of the space requirements generated by GASP and by an architectural firm indicated that higher quality decisions were obtained from GASP. (TC)