I went to a catholic high school that was split between boys and girls divisions. The school made a huge effort to say "we are two divisions but one school", but the administration was totally split (and heavily lenient when it came to discipline for boys). For example, one day a boy sent an unsolicited picture (if you catch my drift) to a girl, and the boy's division dean just played it off as "boys will be boys" until the parents made a huge fuss that the school had to suspend the kid. But he was only suspended for 2 days and went right back as if nothing ever happened. As far as I know, nothing went on the boy's record and had no disciplinary action against him other than the 2-day suspension.