I suppose that makes sense. Not that many 14-year-olds, homeschooled or not, haven’t seen a backside, but it would be an administrative problem.
Exactly, editing a pg-13 film to a pg rating (well aside from all the bawdy jokes but for some reason the moms didn’t complain about those) makes sense. There can be legitimate reasons to use films in class - not many, but a few.