>The school won't kick you out for having the book, but they won't buy it.

You keep saying this all over this thread, can you please tell me how you are reaching this conclusion?

I have linked you to at least one entire state (covering 40+ school districts) where what you are saying is completely false.

Typically, if a school bans something, it also means that the children are not allowed to bring the banned thing onto the school premises.