yehuda: My anecdotal evidence, from many beis yaakov’s, is not zero — but pretty close to it.
Syag: And those of the girls in your daughters class that did those things, do most of them keep Shabbos when they’re 20 or 25? You indicated most in your class, most of the class completely stopped keeping Shabbos. So even if a few in your daughters class did really wild things, it seems by time they are 25 most are still keeping Shabbos, unlike your class.
Re-characterizing your class from being MO, is like re-characterizing a guy from Lakewood who went bad as not being Chareidi.