Is there any sex involved in Catholic high schools?
There may be, but no more than at any other school.
the high school certainly hopes not
I once worked with a woman that went to a catholic middle and high school and she said that those students aren't any different than students that go public school or any other private school. She also said that anyone that thinks that students that go to religious schools are more virtuous than other types of students don't have a clue as to what really goes on with teenagers. I believe her.
Sure enough! A lot more than in public schools, for that matter.