This report presents the evaluation design and results of a two-year pilot test of the Wisconsin System for Instructional Management (WIS-SIM) in seven Wisconsin elementary schools. WIS-SIM is a management information system designed to support management processes in Individually Guided Education programs. The evaluation design, which is based on perceptual and judgmental information from users as well as objective data on system operation, examines the functioning, utilization, and effects of the system. Inservice training for computer-terminal aides, teachers, principals, and school-level coordinators was found to be essential for effective system functioning. System utilization varied greatly from school to school, and those schools that used WIS-SIM most frequently appeared to be most satisfied with it. Evidence on effects of the system suggests it reduced the amount of time required for clerical tasks. Teachers reported that the hours spent on planning did not change, but the effectiveness of time spent on planning increased. Student achievement showed an increasing trend, but these changes cannot be directly attributed to WIS-SIM implementation. WIS-SIM was found to be more cost-effective as a management tool than as a recordkeeping system. (Author/JG)