This makes me think of Peter Watts' experiences regarding making one of his books 'classroom-friendly' [1]. Briefly, a high-school teacher wanted to use his Blindsight in her English class, and got his reluctant permission to produce a censored version. It never got off the ground, because there was parental protest at teaching from a book that at one point had profanity in it.

[1] http://www.rifters.com/crawl/?p=6879