It may be tricky to figure out what books are too sad or what will bother your child. My son was very sensitive to certain topics, and certain things scared and freaked him out. But I had a hard time figuring out what bothered him and what didn't. The main thing that bugged him was "Charlie & the Chocolate Factory", he wanted nothing to do with either of the movies or any of the books. He negotiated a deal with the 2nd grade teacher that he could be out of the room when the teacher read it out loud to the other kids.

Yet the kids loved Harry Potter and even was so fascinated by a picture ET that we showed him the movie around the same age. I really couldn't predict witch things would set him off.