duct tape your mouth
Offer a $1 reward to anyone that catches you talking.Also, you're 11, your grades now don't matter.
In the long run they will, employers for decent jobs look at that stuff y'know.
I mean they'll look at them to see if you were a slacker at one point..
maybe if you stopped getting laid every night and being the most popular kid in school you wouldnt have this problem!