Banning Tolkien, some questions

[Lalaith]

Please forgive me, dear moderator, for starting a new thread on this subject but I have specific questions on this topic which I fear would get lost on the other thread, which is now very long.
My questions are directed at those posters who have direct experience of Tolkien being banned at schools they attend or know well.
*What kind of schools are they? I don't really know what 'parochial school' means, perhaps someone could explain.
*Are they all in the US?
*What *specific* grounds are given for banning his works, if any?
*What other books are banned?
*What form does the banning take - are the books extracted from the library, are you forbidden to take them onto school premises, or does the ban also extend to off-school? *What would happen to you if you broke the ban?
I'd be very interested to hear your replies...