In my opinion, it really depends on the topic of the book he wants you to read. I was reading at three and was reading novels in K. Because of this, my mom loaded me down with classics and books that, looking back, were well past my maturity level. Maturity and interest are not equal.
My oldest child is eleven now and reads at a college level. I don't censor what he reads, but lately have started to keep an eye on it. He has a lot of interest in social issues, but at his age, I don't think that reading a graphic account of a woman being raped and murdered in front of her children in Sierra Leone could be OK for him emotionally. Know what I mean? I would just keep in mind any book's content in conjunction with his maturity level.
