Help! I tried some class-game stuff and I am starting to look like the class idiot, any way to redeem myself for the last three weeks?

So in my classes I keep on failing to get with girls. I talk in my classes and ask the teacher questions. However a lot of people are starting to hate me(at least its the way I feel). Anyways can anyone here save me, and tell me what I should be doing in the last 3 weeks to get girls? Any advice would be great.