I wonder this too... in my class, average english students get 50% ish and the brighter english kids with really good essays will receive maybe a B+ at most... A very rare, NEVER an A+.
whereas other classes, their teacher passes out A's and A+'s like cheap 5c candy
at my school, i know that for methods, at the end of the year, the head of maths sits down and averages out all the sac marks and determines a ranking. Then she gives you a % that she makes up depending on your ranking. so she says getting a C on a SUPER HARD sac could be equivalent to you getting an A+