THE PURPOSE OF THE STUDY WAS TO DETERMINE WHETHER DISCRIMINANT FUNCTIONS COMPUTED FROM MEASURES OF APTITUDE, PERSONALITY TRAITS, VOCATIONAL INTEREST, AND HIGH SCHOOL RANK WOULD SEPARATE FRESHMAN MALE STUDENTS INTO CURRICULUM AND ACADEMIC SUCCESS GROUPS. THE HYPOTHESES CONCERNED AGRICULTURE STUDENTS GRADUATED IN SCIENCE AND GENERAL PROGRAMS, GRADUATES AND DROPOUTS, COMPARISON WITH OTHER ACADEMIC DIVISIONS, AND APPLICATION FOR THE ADVANCED RESERVE OFFICER TRAINING CORPS PROGRAM. THE SAMPLE OF THE PENNSYLVANIA STATE UNIVERSITY MALE FRESHMAN STUDENTS IN 1957 INCLUDED 333 FROM THE COLLEGE OF AGRICULTURE, 199 FROM THE COLLEGE OF EDUCATION, AND 1215 WHO ELECTED ROTC. THE 45 INDEPENDENT VARIABLES USED WERE MEASURES OBTAINED DURING FRESHMAN ORIENTATION AND SUBJECTED TO DISCRIMINANT ANALYSIS STATISTICAL TECHNIQUE. DISCRIMINANT FUNCTIONS, CRITICAL SCORES, AND "V" SCORES WERE COMPUTED AND USED TO CLASSIFY STUDENTS INTO CURRICULUM AND ACADEMIC SUCCESS GROUPS. THE SIGNIFICANCE OF SEPARATION BETWEEN NINE DICHOTOMOUS STUDENT GROUPS WAS DETERMINED BY T TEST. ALL GROUPS INCLUDED IN THE PROBLEM WERE SIGNIFICANTLY SEPARATED. THE STUDY METHOD ADDS A CAPABILITY WHICH IS VALUABLE AS A GUIDANCE TECHNIQUE. THIS PH.D. THESIS, WHICH WAS SUBMITTED TO THE PENNSYLVANIA STATE UNIVERSITY IS AVAILABLE AS 64-13,418 FOR $2.75 ON MICROFILM AND FOR $6.20 AS XEROXED COPY FROM UNIVERSITY MICROFILMS, INC., 300 NORTH ZEEB ROAD, ANN ARBOR, MICHIGAN 48106. (JM)