I'm awfully tired of this charade. Parents have a right to petition their local school boards with regard to what the school administers provision funds toward. In reality, this story is a cover for the more questionable books the school boards have been opting out of in their institutions because the author knows if those were covered most parents would be outright disgusted and possibly mad enough to pick up a pitchfork.
This isn't banning or censorship, its parents having a say what their kids are exposed to. If you don't like that, go petition your school board or buy the book yourself and read it to your child before bed.