THE STUDENT DEVELOPMENTAL PROGRAM PROVIDED IN-SERVICE TRAINING THROUGH WORKSHOPS, PARTICIPATION ON CURRICULUM COMMITTEES, AND SPECIAL COURSES AT LOCAL COLLEGES. CONCLUSIONS ABOUT THE EFFECTS OF THE STUDENT DEVELOPMENTAL PROGRAM ON ACHIEVEMENT WERE PRESENTED. INTERGROUP COMPARISONS OF ACHIEVEMENT, INTEREST, AND PERSONALITY WERE MADE OF SENIOR HIGH SCHOOL STUDENTS. RESULTS SHOWED NO OUTSTANDING DIFFERENCES IN PERSONALITY AND INTERESTS BETWEEN THE PARTICIPANTS OF THE STUDENT DEVELOPMENTAL PROGRAM AND THE CONTROL GROUP. HOWEVER, DIFFERENCES WERE SHOWN IN ACHIEVEMENT, FOR THE PARTICIPANTS IN THE PROGRAM CONSISTENTLY ACHIEVED HIGHER. OTHER PHASES OF EVAUATION SHOWED THE STUDENT DEVELOPMENTAL PROGRAM AS BENEFICIAL TO, OR AT LEAST WITHOUT NEGATIVE EFFECTS ON, THE STUDENTS. THESE WERE NOT DESCRIBED. GRAPHS AND TABLES WERE INCLUDED.