DS6 is a PG kid who will complete the 5th grade curriculum this year at school (so +4 in math including one full skip and 3 additional for subject acceleration). He is a very mathy kid who is still way ahead of the 5th grade curriculum, that is just the pace they are taking which is going well. He still does his own math stuff on the side like algebra and other stuff. He also is doing lots of interesting enrichment and things on the side like math olympiads and learned hexidecimal this year and now loves to take numbers and convert to binary and hexidecimal for kicks. I do know of many other HG/PG kids that are not quite so mathy and have other areas that they excel in. There are such varying degrees it is hard to say.