Summer school and fall enrollments in Pennsylvania during 1975 are reported and compared with fall enrollments in the United States, 1972-1975. Statistics are offered for: total enrollments; enrollments in branch campuses and other centers; lower division undergraduate, non-bachelor's degree-credit upper-division, first-professional, graduate, and unclassified enrollments in institutions within the state; first-time freshmen enrollments; and full-time equivalent enrollments. (LBH)