The design and development of a computerized student flow model at Eastern Montana College and its use in monitoring student enrollment are considered. In addition, guidelines are presented for adapting a flow model to the dimensions of a particular institution. Particular emphasis is given to reviewing the criteria that researchers should use when evaluating student flow models for a possible application at their own institutions. The model is a computerized recordkeeping system that allows the monitoring of individual students and their progress through the college. The system, comprised of a series of COBOL programs, stores selected student characteristics and attendance patterns in the flow model master file. In addition to updating student records in the master file and adding new students each academic quarter, statistical and persistence records are generated. Student characteristics, such as age, sex, and high school grade point average, are stored in the master file, which can be accessed interactively to view or change individual records. Student persistence is reported both in individual and summary form for the students being monitored. Special reports for various types of students, such as older students or minority students, may be generated. The system utilizes three files: the student file, the graduation file, and the flow model master file. The following variables may be used either singly or in combination to select the specific group of students: class, status, quarter of attendance, major, ethnicity, and sex. The student profile report includes information on geographic origins, age distribution, and part-time and full-time status. (SW)