TO TEST THE APPLICATION OF THE GENERAL SYSTEMS APPROACH IN CURRICULUM DEVELOPMENT, A PROBLEM WAS PROPOSED IDENTIFYING THE PHENOMENA AND CONTINGENT VARIABLES OF THE CURRICULUM SYSTEM WITHIN THE INPUT-OUTPUT FRAMEWORK. WITH TEACHERS, SCHOOL ADMINISTRATORS, AND GRADUATE STUDENTS OF EDUCATION AS VOLUNTEER PARTICIPANTS, TWO EXPERIMENTAL GROUPS GIVEN INSERVICE TRAINING AND ONE CONTROL GROUP WITHOUT INSERVICE TRAINING YIELDED DATA PRIMARILY BY EVALUATION OF WRITTEN CURRICULA, VERBAL CONTENT ANALYSIS, AND INTERACTION PROCESS ANALYSIS. FINDINGS GENERALLY SUPPORTED THE EXPERIMENT'S MAIN HYPOTHESIS THAT INITIAL CURRICULUM ENGINEERING DECISIONS ON SELECTED DATA WILL SIGNIFICANTLY FACILITATE GROUP DECISIONMAKING IN CURRICULUM DEVELOPMENT. THIS PAPER WAS PRESENTED AT THE AMERICAN EDUCATIONAL RESEARCH ASSOCIATION CONFERENCE (CHICAGO, ILLINOIS, FEBRUARY 8-10, 1968). (JK)