Should sex, language, and violence be banned from literature in order to 'protect' our nation's children?

No way. If parents want to keep their children from reading about that then they should be monitoring what they read. The writers have nothing to do with that. So, the children just need parents that care enough about what they read to actually read it. As for the teacher, she didn't do anything wrong. The kids had no idea. So, they should just leave that women alone.