I dont know well how school system works in USA , but in my school it works different.Some of my Classmates have studied in States , and they say it is easier, somehow in most of the cases they get one grade up from the original one here.
we have these grades
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20.
10 Is passing in the line.
As for my average i am 16-17 student, i am 7th out of 30, so far.
I make mistakes too.. I failed math , but now i ve pass it.
Our class average is 14.Yeah my school is hard is one of the most strict of my country , we cant even talk to teachers in spanish(our own launguage), we have to talk to them in english, and reffer then with ''Miss"
But i dont spend all my time studying...I am most of the time infront on a PC.