Performance aspects of three samples (N=58) of students enrolled in computer science literacy courses for educators were studied. The person-environment congruence concept of Holland's model of vocational behavior was used to predict class performance. The model uses a classification system which arranges six vocational types in a hexagonal configuration of invariant order (realistic, investigative, artistic, social, enterprising, and conventional) and uses the relative proximity of types on the hexagon to determine the degree of congruence between a person and an environment. It was predicted, for example, that educators of the investigative type would experience more satisfaction in the course than would those of the social type. The virtual absence of individuals of the investigative type in the courses precluded a direct test of the prediction. However, correlational relationships among relevant variables were pursued. Course attendance data provided some support for the satisfaction prediction. Course grades were not differentiated by Holland type, a finding which was attributed to the predominance of Social types in the samples, and the seemingly successful efforts of the professors to tailor the courses to the non-Investigative characteristics of the students. Nine references are listed. (Author/LMM)