A MODEL OF THE MATHEMATICS DEPARTMENT AT THE GARBER HIGH SCHOOL AS ESSEXVILLE, MICHIGAN, AS A SYSTEM FOR PROCESSING STUDENTS WAS DESCRIBED IN THE LAST OF A SERIES OF THREE REPORTS. THE RESULTS OBTAINED THROUGH SIMULATING THE SYSTEM ON A COMPUTER WERE ALSO REPORTED. A FEATURE OF THE PLAN WAS NOTED TO BE ITS FLEXIBILITY IN PROVIDING A UNIQUE PROGRAM OF COURSES TO MEET THE VARIED ABILITIES AND INTERESTS OF INDIVIDUAL STUDENTS. DESCRIPTIONS WERE GIVEN OF (1) A MODEL OF COURSES IN MATHEMATICS SHOWING THE INTERRELATIONSHIPS AMONG 29 COURSES OFFERED BY THE DEPARTMENT AND THE PATHWAYS BY WHICH THE STUDENTS MAY PROCEED, (2) RESULTS OF A COMPUTER SIMULATION OF STUDENT BEHAVIOR AS THEY ARE PROCESSED AND TO PREDICT THE USE TO BE MADE OF THE VARIOUS COURSES WHEN THE DEPARTMENT BECOMES FULLY OPERATIONAL, (3) IMPLICATIONS FOR THE OVERALL PROJECT, AND (4) THE VALUE OF SYSTEMS ANALYSIS AND COMPUTER SIMULATION IN THE STUDY. CHARTS AND TABLES WERE INCLUDED. RELATED REPORTS ARE ED 010 574 AND ED 010 575. (RS)