I guess one question that I have is that the Cogat 6 has a max score of 150, with a SD of 16. From what I read, the 7 has a max of 160, with a SD of 14. What I can't figure out is how to compare scores to get an idea of percentiles?

He did make it into the program - the cut off was 128 (2 SD). I am now trying to figure out how we are going to keep him challenged in math.