A method was developed for doing a computer simulation of elementary school activities for different school organizations, with traditional and multiunit schools being observed for significant factors relating to the use of space. Analysis of the collected data showed that group size varied significantly as a function of school program and activity. Design modules were then created describing activities for a school program in terms of the individualization of activities and the potential for an activity to distract other ongoing activities. Square feet per student were computed using optimal dimensions and collected observational data relevant to the actual space used during activities. A system of computer programs was designed and partially implemented that would accept as input a school program designation, a planned enrollment, and a proposed school floorplan and would apply the appropriate model to a schedule of activities to determine the adequacy of the proposed design in terms of projected space needs. (Author)