This report is concerned with the development of a model for projecting instructional activity and its application within The Pennsylvania State University. Inasmuch as models of this type have been developed at a number of institutions of higher education, the effort described in this report does not constitute an extension of fundamental knowledge but an application of existing principles to a unique situation involving an institutional system of unusually great size. Explicit in the basis of the model are tenets that there exists for the average student enrolled at each academic level in each major program of study (1) a value of demand for instructional activity representing the summation of the instructional activities for all courses for which he is registered, and (2) a fractional distribution of this demand among the organizational units providing instruction. When a forecast of enrollment is supplied as input to such a model, the output constitutes a projection of instructional activity for the same period of time. (Author)