in my school there were 4 divisions. all the studious ones (above 85% types) were in division A then between 75%-85% in B, 65-75% in C and below 65% in D.
i was in A and most of us looked down the B, C, D students. we always thought we were the best. the competition was real tough in our class. all the parents wanted their kid to be in A. so as soon as someone from other class excels in studies they automatically came to A. some years later this was stopped and B, C and D divisions started getting good students too. still division A was the toughest.
our school argued that they were doing this to give a fair chance to all students. but us students esp. the ones in division A were mighty proud of being the best.