Health And Social Care GCSE Grades

Hi
I did the HSC exam in January, we got our results back on Thursday, I got 73%
I asked my teacher what grade that would be, and she said an A.
Then today, she has said that with your courseworks and exam result if you want to get an A you've got to get 270/300. A* = 280/300.
ive worked out thats like 90% plus, and to me it seems really high.
on one coursework i got 96/100, the other one is being marked this week.
so even if i got like 100 on coursework 2, 96 on coursework one, and then 73 on exam, that comes up to 269.
ahhh i dont know, it just seems way high.
and also, i wont even got 100 on coursework 2 sooo theres no chance of getting an A is there?
Grrrr!
I'm annoyed.
anyone know anything about HSC grades and boundaries?
or anywhere i could get em?
Thanks
x

do you know any where where i can get infor to help me on unit 2 health and well-being thnks xx