California Code, Education Code - EDC § 66201.5

It is the intent of the Legislature that both the University of California and the California State University shall seek to maintain an undergraduate student population composed of a ratio of lower division to upper division students of 40 to 60 percent. Consistent with Section 66201, it is the intent of the Legislature that the University of California and the California State University reach and maintain this goal by instituting programs and policies that seek to increase the number of transfer students rather than by denying places to eligible freshmen applicants.