The Jefferson County Public School System in Colorado is conducting a study which implements a digital time-shared computer as support for a systems approach to instruction. This study currently involves one elementary school but it will support a total of thirteen schools in the future. The computer support includes computer-generated criterion test forms. The items for the test forms are randomly selected from a test-item bank. Additional computer support includes the use of a remote document reader for test scoring and updating student academic records. The records are updated using test results and teacher certification of mastery. Data from academic records is being studied to determine its usefulness for formation of instructional groups in a multi-unit elementary school. The design of feedback reports to teachers is being studied to optimize the report's usefulness in instructional processes. The effects on teachers' roles caused by the computer support of an existing instructional system are being observed. (Author)