(I put this in the business section cause I'm talking business.)

Should I still go to the concert?

For three years, I have put my heart and soul into my choir class. I've sung solos, I've respected the teacher even when nobody else did, I sung out, and tried my hardest in the class.
I was already angry when I got there because these immature kids had the nerve to joke about very serious matters. Then to rub salt in the wound, I come to class and find out I won't be getting the solo I've been striving to get since we started singing the song. At the end of class, the teacher said we could wait on the sidewalk. I go out the other door, and this woman flips out. Just because I didn't stop to sign these girls stupid petition for this challenge they were having.
She asks what class I'm going to, and when I replied Language Arts, she said real sarcastically "Yeah I bet you work real hard in it." (I struggle in many of my classes.) Then she had the nerve to tell me "Thanks for nothing." After 3 years of putting all of my heart and passion into her class, that's what she has to say to me. I don't even want to show up to the concert anymore. I feel too angry and heartbroken to do so, not to mention she doesn't deserve it after that little stunt. What do you guys think I should do?