Sounds like now is a good time to understand him and what your local school may offer. Do some research, the reading that early is a pretty common gifted attribute. Don't buy into "leveling out" that's more about kids who've trained to read with some effort. To put into perspective I still remember my son's first grade teacher reporting that he could count to 150. Yawn? Had since he was like two and a half, but those are what average expectations are. Odds are you have other gifted family members and your sense of normal may be skewed. Ours was.
