What do your children read?
Parents and libraries really push kids to read, but do you want your children to read just anything? I've seen and heard about some of the books that kids have to read for school, and I've heard lots of objections to the required reading list. My kids go to a public school, and fortunately I've never found anything really horrible in their reading material. I worked at a public library for 6 years and was surprised by some of the young adult books. Now we have kids shooting their parents and classmates, kidnapping, etc., etc., and I have to wonder if it's because Mom and Dad weren't around in their formative years or if it's because they saw something "cool" like this in a movie or read it in a book. I've been writing fiction novels for a few years now, and I've written one young adult novel. I tried to emphasize some good values in it. Maybe a teenager will read it and think that's a good way to behave.
I think people automatically assume that if it's in a book it's good for you because you're reading. You could write out an entire R rated movie and put it in book form, but that doesn't make it any less raunchy.
Of course, if it's recreational reading that's a different story.