This study examines multiple years of data from the Delaware Study of Instructional Costs and Productivity, which analyzes teaching loads and instructional costs at the level of academic discipline. The study determined that, for those four-year institutions participating in the Delaware Study, approximately 80 percent of the variation in instructional costs across institutions is associated with the mix of disciplines at those institutions. The study further identifies institutional characteristics that are most closely associated with the magnitude of instructional costs.
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