Dottie, thanks for ressurrecting this thread as I have been meaning to add something.
I had a look at the challenge set from Intro to Alg. The FIRST chalenge set, I might add. There are problems on it (I don't have it front of me so I can't give you exact numbers) that my DS is doing currently at school in his ALG 2 class ! I am so grateful for it, in a sense, since it has proved to my DS that yes indeed he should start Algebra courses at AoPS from Intro to Alg., even though he will be doing pre-calc at school.
Sadly, the school does not teach him much (as he has been always telling me).
