A MODEL FOR EVALUATING INSTRUCTIONAL PROGRAMS AT THE SCHOOL DISTRICT LEVEL IS DEVELOPED. THE MODEL IS BASICALLY A DISCUSSION AND AMPLIFICATION OF THE DEFINITION OF "EVALUATION." IT CONSISTS OF SIX MAIN ELEMENTS--(1) STUDENT INPUTS, (2) FINANCIAL INPUTS, (3) EXTERNAL SYSTEMS, (4) MEDIATING FACTORS, (5) STUDENT OUTPUTS, AND (6) NONSTUDENT OUTPUTS. THESE ELEMENTS ARE DISCUSSED IN A MACRO-SYSTEM. THE MEDIATING VARIABLES ARE, BY ASSUMPTION, THE ONLY MANIPULABLE VARIABLES IN THE SYSTEM. (HW)