If the score is high, it will be a decrease in the order of a and so on. Which I think is a separate classrooms according to our knowledge is a good thing.
If the results come out, A room is high and reaches, respectively increasing, which I think that separate classes according to their level of knowledge is a good thing.
If you score high, and it will be in the room and reduce A came down in the order as far as you can go, I think that a separate classroom in accordance with the level of knowledge is a good thing.