When I grew up there weren't any sex books in the school libraries, nor in the public libraries. The books were available elsewhere, usually in adult shops.
Adult books are for adults.
Somehow, the kids were just fine.
Yes well there probably weren't indoor toilets or the internet either, but progress continues.
LGBT books are not sex books. They are books with LGBT,characters doing normal things in their lives. Making it normal for people to think about LGBT people and their dynamics.