Florida is not banning any books.
It is illegal for teachers to bring unapproved books into a classroom. That is effectively banning them, especially considering that prison is the punishment for bringing books in. That means that a teacher can bring a book everyone agrees is fine, and if it was not specifically approved, that teacher is going to spend a year or two in prison.
It is dangerous to even bring approved books into school. If you accidentally leave the book in school after the renewal deadline, you go to prison for a year or two.