The study reports the definition of programs of study which are homogeneous in the patterns of abilities and interests of their students and the grading standards of their faculties. It also presents data relating these programs to success, attrition, and transfer of the students who enroll in them. Curricula were grouped twice: first, according to academic similarity and, secondly, according to vocational and personal preferences. The subjects for this study were college freshmen for whom six academic variables were available for academic grouping: high school percentile rank, four American College Test scores, and first semester grade point averages. Interest grouping subjects (also college freshmen) had available data on ten Kuder occupational interest scales, six Kuder personal preference scales and the six academic variables. Results obtained from the use of Ward's hierarchical grouping analysis indicated that programs of study which are homogeneous in terms of the abilities, interests and college grades of their students can be identified, that these programs differ on at least two readily interpretable dimensions and that grouping of curricula on these bases simultaneously groups them according to sex ratio. (Author/MC)