Hi Barbara,
Welcome!
You don't need a number to hang out here, but BTW - congrads on those MAP scores! I love the Idea of those self-regulating tests! They don't always find all the gifted kids, but they sure allow lots and lots of the gifted ones to show what they know. On an achievement test, there may be only one or two items that give an 11th grade result, by contrast, when a kid gets a score of 11th grade on MAP - that means they answered lots and lots of 11th-type question.
Testing might help you decide if you want to go for a gradeskip or two if you ever wanted to return to 'regular' public school.
An alternative is to use the talent search - perhaps Explore now, and SAT or ACT in a few years. Much cheaper than WISC and SB-V, and really make an impression on decision makers.
Sounds like your son is developing well. If you are happy with homeschooling and it works for you, why not keep things as they are?
Smiles,
Grinity
