It isn't time for me to comment on this yet. I found out about it on Friday, but I have few details yet. I have read the book. I have heard from Dr. Hatrick. I am studying the relevant policy. I just want you to be aware, and I want you to know that I am aware.
You may also find interesting the American Library Association's Intellectual Freedom and Censorship Q&A, or information on Censorship in the Schools.
Is the "C" word too strong? The ALA's definition:
Censorship. A change in the access status of material, based on the content of the work and made by a governing authority or its representatives. Such changes include exclusion, restriction, removal, or age/grade level changes.
Not everyone will agree that this is censorship. Some will say it's just good judgement. More to follow.