> If the teachers never give a single 20/20, that just means there is grade deflation, right? Effectively, 18/20 or 19/20 becomes the "perfect score," since it'

> If the teachers never give a single 20/20, that just means there is grade deflation, right? Effectively, 18/20 or 19/20 becomes the "perfect score," since it's the highest possible to obtain. "Perfect" means that there is nothing to improve - which is hardly ever the case. Hardly anybody is perfect, so hardly anybody can get a perfect score.