A question for Christians: my teacher has a bad influence on me?

Ok, here's the thing. We have a Psychology teacher who, I know for a fact, has never been qualified to teach, they keep her because of the the staff shortage. She is usually very aloof and proud. When you tell her, you've read about a certain subject there and there, she just laughs it off and doesn't agree with anything you say, unless your opinion coincides with hers. I tried to be tolerant and kind to her. She is not a Christian and I thought that maybe if I ever become friends with her, which very well may be, she could be saved. I pray for her regularly, too. Initially I thought perhaps I could even influence her while I'm still her student by displaying good behavior and doing my best in cl. I really wish the best to her... But despite my many efforts to be friendly, and influence her in a positive way, it's sort of the other way around. It feels like she influences me much more, than I influence her: we constantly argue, our personalities clash... I do my best to downgrade the tension between us when that happens, but often after such heated discussions I feel that it's much easier to give up and agree with her ways of thinking.... And that's not always so terrific... She sort of reminds me of who I used to be before I was saved and... that kinda makes me go in the wrong direction. I've really been trying to be patient with her but something happened a few days ago that made me think about maybe dropping the cl and joining another one with a different teacher or something... We were supposed to have an exam, and she didn't show up. When we found her, and I told her, how wrong it was to do such a thing to us, she just brushed me off. I don't think we're getting anywhere here, and even though moving out of the cl doesn't seem like a very good option, because it might hurt her feelings, if I do it, what other options do I have? So what, do you think, I should do - stay there and endure her attitude, or drop the cl and take it with another teacher? It's just I'm not so sure if leaving the cl would be the right thing to do... After all, she may rely on me. I've always been good in Psychology, and she might take my departure painfully, thinking I did it because she's bad.