Neither of those are LGBT+ issues, for the record. I know one or two of the stories you're talking about, one that was a drag performance and another about a book with a same-sex relationship, but the issue with either of those had nothing to do with their connection to LGBT+ topics--at least it shouldn't have been, but they were treated that way. They should've been handled just like anything else inappropriate in a school, but at large, the problem was treated as them being drag or having LGBT+ characters.

There's no need for legislation for this kind of thing because the same things that are inappropriate for queer people to do in schools are already inappropriate for cis/het people to do. I'm not saying that in disagreement with what you said, just pointing it out in addition.