What still distinguishers Catholic schools are parietals. There were women’s and men’s floor or single sex dorms, sign-ins after 10 and guests were out by 2. While the rules agaisnt sexual activity were never enforced, they were still on the books. In graduate school, at American, there were no such rules and floors were co-ed. As for the student’s themselves, there was no marked difference in chastisty in either university (or Catholic U., where my R.A.’s girlfriend slept over most nights). Any ”Catholic identity” in this area was for show. I suspect it always has been. Prior generations simply had to be more creative in their fornicating.