A market impact analysis was performed to determine the potential enrollment loss for all sectors of postsecondary education in Florida that would result in allowing four upper-division state universities to implement new lower divisions. Additionally, the history leading up to this request by the upper division colleges and the pros and cons for implementing the lower divisions are considered. For each of the four institutions an impact study was completed which assessed the number of freshmen from a region for each college or university affected by a lower division, the total number of freshmen enrolled at each college or university, and the number of lower division students being requested for the new lower divisions. Estimates were made of the worst case impact on the surrounding institutions (loss to the state system, the community college system, and the private sector), because it assumes that the new lower divisions will achieve their first year enrollment growth by reducing the student population at other institutions. Two of the four studies are discussed: Florida International University and University of North Florida. The other schools are Florida Atlantic University and University of West Florida. The results suggest that no single sector will be too severely affected by opening new lower divisions; however, expected declines in the number of Florida high school graduates may make the situation more serious for any of the three sectors if the lower divisions are approved. (SW)