Fuck grades and fuck highschool. You know your paper was good, but it's a shame that you would care if your teacher gave you a high mark on it or not. You shouldn't need the vallidation from some techer that your paper was good. And if your teacher is stupid enough to give some stupid kid a high mark on a clearly copy-pasted paper than you should take it as a compliment that he didn't give your paper the grade it deserved.
I have also learned that grades have a lot to do with the way you act in class. I am in 3 art classes at school, all with the same teacher. I know my art work kicks ass, and so does my teacher. But he is such an annoying controll freak and hates that I NEVER do anything in class. I just talk to whole time because I can't concentrate on my art work. But in the end I always have more work turned into hiim than all the other kids because spend hours at night doing it (I can never sleep). And when all my work is in and done I normally get A's on all of my pieces but then we have this stupid section called citizenship which is worth 1/3 yes 1/3 of our grade. And because my teacher can't deny that my work is done and good he makes sure I have a bad grade in his class by lowering my citizenship grade. But I could give a shit if my art grades are all low, yet thats the only area im actually good in, because my grades refelect nothing except the fact that im social in that class. Now im rambling on ...