This really hurt to hear

So, in 7th period today (a dance class I was put into regardless of my elective choices) each of our groups had to perform our own choreographed dances in front of coach O'Niell and the rest of the class. Of course, it had to be on the day when we are missing 3 people from our group, including the only one of us who has any dancing talent whatsoever. It ended up only being two of us, just me and a girl who's been absent a lot this year. Because of her absence, we had spent a lot of time trying to get her caught up on the choreography. I'm going to be completely honest with you, and I guaruntee you the other girl would say the same about herself: I am neither coordinated nor graceful in any way, point blank. I just don't dance. But, since I'm in this class, I'll do what I can. After mustering up the courge to get out in the center of the gym to perform our barely-practiced dance, practically on my own, I got up there and dis my best to remember to stick to the beat and remember the moves. I think I did alright at first, but then I got off beat after the other girl accidentally tripped. It would have been no big deal, if it weren't for our killjoy of a gym teacher, coach O'Niell, glaring right at us. At last we finished the dance. And you know what we recieved as feedback after weeks of working, editing, and creating the custom music and dance moves? Insults. From the teacher herself. All I got to hear about was how short it was and how sloppy it looked - right to my face in front of the entire gym period. The second after I attempted to explain the reason for something, she cut me off and retorted back at me with one of the harshest things I've ever heard from a teacher, and I quote: "You know what? No, you listen to me, that was painful, downright painful, for me to watch. The entire audience is sitting here wincing at how awful that looked. Even though that was only a 2-minute piece, I was just waiting for it to end. And if you don't get that dance cleaned up by tomorrow, your entire group has zeros for their mid-term exam grade." Even after that verbal punch in the stomach, I pulled myself together enough to calmly ask her if it was mandatory we perform for the school. Again, she answered that we would all have zeros if we didn't. I was inclined to say "Well, you're obviously embarrased to have me as a student... After all, if I'm not going to be your pride and joy, why show it off to the audience?!". Good Lord. And I have that woman next semester too...