Personality, interest, and ability variables differentiated among California junior college students enrolled in occupation-centered curricula. Analytical techniques used were Stepwise Discriminant Analysis and Multivariate Analysis of Variance. Hawaiian students were differentiated on interest measures; Idaho students, on interest and personality factors. Apprentices appeared to be like currently enrolled students. There were some relatively small differences between students and graduates. Interests of Hawaiian students tended to be quite different from those in California. Significant differences in variance-covariance matrices indicated possible instability of factor structure underlying test scores of criterion groups. (Author)