Using post-secondary vocational education students as the populations, these two sub-studies of the Project MINI-SCORE sought to determine the extent to which pre-enrollment standardized test data can be used to predict vocational success. For the purpose of the study, vocational success was defined either as successful graduation or successful graduation plus employment. The first sub-study investigated: (1) the ability of each of the separate scales of each instrument to differentiate occupational groups, and (2) the extent of difference between groups defined as successful graduates or as successful graduates employed in related occupations 1 year after training. The second sub-study investigated the ability of each total instrument to differentiate between occupational groups, and developed a method of presenting data pertaining to a multi-scale test instrument in the form of a counseling aid. Results of these sub-studies tend to indicate that there are significant differences between the types of people who enter and succeed in different occupations, and that it is possible to cluster occupations based on the characteristics of people who enter them. Related documents are available as VT 016 149-VT 016 152 in this issue. (Author/JS)