Actually he is enrolled in a public school for next year, but it is an Independent Study program rather than conventional school so it equates to a version of homeschooling. However from what I believe the grades transfer equivalently.

I WISH I had people respond, "Wow he's advanced for his age." I'd be much more comfortable giving his age if that was the case. What I have gotten, for the most part, is dropped jaws and "A 4 year old that does ____ !!!!!"