My son has done 7 months of Kumon in Silver Spring, MD. What is Kumon? It is a math (or math & reading) program that supplements your kid's school math program with very computationally focused math. It goes well with common core math because common core math is conceptual focused and assumes you are using a calculator or learn your computation elsewhere. In theory, you can take Kumon all the way to Calculus, but in practice, it looks like kids drop out when they hit the hard level (I forget which), or when it transitions to algebra. My theory is that the program has a few features to keep costs in check. Kumon is $140-$150 per kid, they keep labor costs in check by having the kids do a lot of the work "self directed" - This is likely to break down when the going gets really tough or when it transitions to a skill that you can't improve at by just doing more of it (i.e. if you can't solve an algebra equation, you can solve it by staring at more of them...