This study proposes an information system to gather, coordinate, and evaluate longitudinal data collected periodically from students in sample groups beginning with entry into high school and continuing through young adulthood, i.e., five years post college. Its purpose would be to gain insight into characteristics of the student population, and thereby provide information for improving policies for higher education. The report provides background for the study and discusses the many aspects of establishing a contralized processing facility. The document contains tables, lists, and appendices. It is recommended that one responsible body, a service bureau, be established to coordinate information into a centralized data processing system. (NF)