Originally Posted by Mathboy
Some other people like to use grade level

like MG: 1-2 grade ahead
HG 3-4,MG 5,PG 6....etc, just rough guid
I'm not sure what you mean here. Are you saying that an HG child will be *working* 3-4 grade levels above grade by age or that they will *test* 3-4 grade levels ahead?