Comment by tmcdos

I have heard that in Netherlands there used to be (not sure if it is still there) a system where you have for example 4 rooms of children. Room A contains all children that are ahead of rooms B, C, D. If a child from room B learns pretty quickly - the child is moved to room A. However, if the child leaves behind the other children in room B - that child is moved in room C. Same for room C - those who can not catch up are moved to room D. In this way everyone is learning at max capacity. Those who can learn faster and better are not slowed down by others who can not (or do not want to) keep the pace. Everyone is happy - children, teachers, parents, community.