It's interesting that they say the effects in second grade appear to be larger. My MG dd took the second grade EPGY math course as a replacement for her second grade school math and it was excellent. Interesting, appropriately challenging, well-organized. As an example, by the end of the course, she could solve word problems that can be modeled by a system of 2 equations and 2 unknowns.
However, a classmate later tried the EPGY 5th grade math and his mom said it was not good.
She is Gr. 6 now. If the EPGY courses haven't changed, I would recommend their 2nd grade math course.
