How is it a forum? It's a book in library. I wouldn't want my kids to have access to it. But, with every kid in America having a phone, I suspect they've all been exposed to this material already.
Sure, but this isn't being taught in the classroom either. Apparently, it's available in the library at a high school. Again, wouldn't be my choice to have that book at all, but it is voluntary. It's not material that is assigned in the classroom.