They currently do, to a point. Lower functioning students are provided with much more 'hands on' teaching situations. I don't know how effective separating st

They currently do, to a point. Lower functioning students are provided with much more 'hands on' teaching situations. I don't know how effective separating student more would be- one could argue that at a certain point it might harm the students because of the lack of socialization. A selection bias of social awkwardness, if you will.