I agree, but stratifying too early can be harmful. I believe what's likely to be best for everyone is: * Keep everyone on the same track through early element

I agree, but stratifying too early can be harmful. I believe what's likely to be best for everyone is: * Keep everyone on the same track through early elementary, but we need to work hard on making the classrooms encourage everyone to be curious and stretch themselves. Games and puzzles are the answer here. * In upper elementary, start to offer differentiated instruction within a classroom. * In middle school and beyond, have true stratified tracks (which this article recommends not doing).