Using SAT scores as a means of controlling for student input, three different statistical methods were used to estimate the relative productivity of various curriculum groups. Subjects were 873 University of Delaware seniors for whom both SAT scores and UP (Undergraduate Program) Area Test scores were available. The Area Test scores administered toward the end of the senior year were used as the criteria of achievement in social science, humanities and natural science. This study shows that knowledge in these three principal areas of academic learning is, at least in part, dependent on the characteristics of the curriculum in which a student is enrolled. (Author/MJM)