"texas137...did/do you take classes through EPGY?"
I'm not Texas137, but I hope she thinks I am a friend of hers, as I am much in her debt for many useful posts. It was over on the AoPS site that I learned about this College Confidential site from her. (I used to think Texas137 was a dad, because most parents on AoPS are dads, but here on CC I have seen her refer to her husband, so I think she is a mom.)
We have used EPGY here for our oldest son, who started the EPGY course sequence in math at the fifth-grade level, right after the end of his fourth-grade "school year." (We homeschool.) He got through the EPGY beginning algebra course by a year later. Since then, he has been in a classroom-based accelerated math program in our town, but has also taken the EPGY geometry course (which is VERY good). We have been very pleased with EPGY. He is just about to start the C programming course, and I expect he will be in the physics course before the end of this school year. He has also taken the EG20 Grammar of the English Sentence course, which is also very good.
Our son is about to start a precalculus course that compresses the whole content into one semester. Next year he starts a calculus I course at eighth-grade age. One can get a lot of extra speed through the standard math curriculum by starting out with EPGY. But for various reasons more fully explained elsewhere,
http://www.artofproblemsolving.com/R...A_Calculus.php
our goal here is not just to speed through the standard curriculum, but to go beyond it to a deep understanding of precalculus topics that are only treated cursorily in most United States school mathematics curricula.
The Art of Problem Solving (AoPS) Web site is a great resource for math-eager young people and their parents.