I haven't heard of this being attempted, though I would surprised to find that it hasn't.
However, one reason it might be avoided is due to the potential negative effects tracking [1] strategies may have on some students. In my public school district, any form of tracking at the elementary level was difficult to implement due to pushback from parents, even in situations where the educators felt it was beneficial.
However, one reason it might be avoided is due to the potential negative effects tracking [1] strategies may have on some students. In my public school district, any form of tracking at the elementary level was difficult to implement due to pushback from parents, even in situations where the educators felt it was beneficial.
1 - http://en.wikipedia.org/wiki/Tracking_%28education%29