At a time when planning becomes more and more essential for American colleges and universities, precise and accurate information about them becomes critical. This document reports on some sophisticated statistical measurements of certain aspects of the supply and demand for students, places for them to attend college, and faculty members to teach them. Models are constructed to demonstrate the application of their procedures to the econometric analysis of: (1) the demand for freshman places by potential students as a function of costs of attendance, student family income, student academic ability, and other traits; (2) the relationship between student-faculty ratios and institutional characteristics; and (3) the stocks of educated persons, by age, sex, highest degree, and field of specialization. Presented to illustrate the use of qualitative models for policy making are: (1) alternative forecasts of the demand for new Ph.D.'s on college faculties; (2) estimates of human financial resources requirements of alternative programs to provide two years of college for everyone; and (3) estimates of the impact on higher education of significant compensatory education programs in primary and secondary schools. This analysis demonstrates not only that rather widely differing results can be obtained, but also that a number of different assumptions are quite plausible in attacking problems of estimating future developments in higher education. (Author/KE)