My DS has a reading age really advanced for his age I was told to get him nonfiction book . Because the story's that are at his reading level 15 years + will have content that at 9 he maybe should not read lol . So I got him a set of nonfiction books about science . 1st chapter ADOLESCENCE ,REPRODUCTION AND RELATIONSHIPS . grate !!!! I just am not sure when do boys start to think about that stuff and what at almost 10 should I be telling him !