um i think its a bit unfair.. because it also depends on the kind of school u go to
example.. i go to a crap public school and got 3 band 5's n 2 band 4's and got 71.1
my work friends brother goes to a good private school and got 1 band 5 and 4 band 4's.. he got 73
and we did 4/5 subjects...