Do I have a reasonable right to compensation?

Hello,

As a teacher at a charter school, I was written up for a comment I had made that the acting principal disagreed with. I felt that she was purposely making things difficult for me. I then requested a meeting with the management company that runs the school to discuss how I felt about the situation. They said that they were upholding the decision to write me up, at which point I agreed to let the issue go and move on. The very next day, I was terminated without any specific reference as to what I had done to deserve to be fired. There was a fight in my classroom, which she blamed me for. I believe she let me go as an act of retaliation for calling a meeting with the owners of the management company. My question is, what, if any rights do I have here? I am also fearful that they will not pay me properly for hours already earned.