Here's an idea:
During the holiday season wrap a set of LOTR and give to the principal. Challenge him to read it.
If that doesn't work, just quote lines from the books in front of his face.
Alright, I know this would probably get you in trouble, but it was just a thought.
Errrr. I know I probably said this before, but it just makes me so angry for someone to ban such beautiful books!