There's a million reasons, but I will state some of the main ones. To begin with, she fails to accept that I am smarter than her, so whenever I correct one of her mistakes (And believe me, she makes them on a daily basis), she will never accept it, but do one of these: 1) State that that is my opinion and everybody is entitled to their opinion. Yes, that's right. An opinion in Physics and Chemistry. 2) Say that that is beyond our comprehension since we are "just kids". Excuse me, but since I was able to correct you, one would think I can comprehend both the topic, and why you were wrong. 3) Shout at me for "interrupting" her. She is a self-centered idiot, and that can be seen in my grades in her subjects: 15/20 at Physics, 16/20 at Chemistry, and 17/20 at Biology. Those should all be 20/20, but she downgraded me in order to get back at me for exposing her idiocy to the class. Aside from that, she has racist and sexist beliefs, which is generally not a sign of intelligence.