I hope this response is not too late. I've been lurking around here for the past two years but have never posted. Anyway, my son started CTY online classes in the 2nd grade. Over the last 2 1/2 yrs he has completed grades 3, 4, 6, and pre-algebra. Last summer, following 3rd grade, he took the day class on geometry & spatial sense. The class was held at a local private high school that his school feeds. The short answer is that the class has been the highlight of his young life. He loved every day of it.
I only know about this class. He was on the younger side. Most of the kids were advancing to 5th & 6th. The math portion was not number crunching. A lot of hands on and group work. But it was a great help that he was already familiar with the basics of geometry (6th gr math). I do not recall there being very much homework.
This summer he is doing a data and chance class. He can't wait. good luck.
