MG, you may be on the correct path. A moderately-thorough search through Google brought up numerous references to this same 2006 'banning', laying the blame on "some parents in a Kansas school district" without further clarification or citation. At least one of the references went on to say that "according to the parent group at the heart of the issue, ‘humans are the highest level of God’s creation and are the only creatures that can communicate vocally. Showing lower life forms with human abilities is sacrilegious and disrespectful to God’." So maybe it wasn't even banned — or if it was, it was strictly local and didn't get make waves anywhere
but the Lower Bumfuck School District — but merely challenged.
However, I did find a second reference to a single school's banning of "Charlotte's Web", this time in Merry Olde England —
Such was the case at a junior high in Batley, West Yorkshire, England, which became the center of international attention in 2003 when the school’s Headteacher decreed that all books featuring pigs should be removed because it could potentially offend the school’s Muslim students and their parents. No such complaints were ever filed by any parent involved with the school, but the school official felt she was being proactive in her policy.
Interestingly enough, it was the Muslims themselves who asked for the ban to be lifted...
Islamic leaders in the community asked the school to drop its ban, which included Charlotte’s Web, Winnie the Pooh, and the Three Little Pigs. The Muslim Council of Britain formally requested an end to the “well-intentioned but misguided” policy, and for all titles to be returned to classroom shelves.
Inayat Bunglawala, of the MCB, said: “It is understandable, but this is a misconception about Islam which is often encountered. The Headteacher has acted sensitively, because there are parents and families who believe that portraying the pig in books is wrong. But there is absolutely no scriptural authority for this view. It is a misunderstanding of the Koranic instruction that Muslims may not eat pork. Drawings and photographs of pigs have always been used in children’s books to teach values common to all the great religions, and these are perfectly legitimate in Islam as well. There can be a cultural misunderstanding, and it is good for everyone to discuss it and clear it up."
-"BB"-
Yes, I suppose I could agree with you ... but then we'd both be wrong, wouldn't we?