With the growing concern for the development of good mathematical education planning models, few states have developed the type of enrollment projection systems that they would consider to be ideal. The primary objectives of this research project were to develop, construct, and document an enrollment forecasting system for use by the Ohio Board of Regents. In addition, an important part of the research deals with the subject of part-time student enrollments. A first step in the modeling process for forecasting part-time enrollments involved the identification and characterization of part-time student populations in each Ohio school and in the entire state system. (Author/MSE)