V.H.
I have not really experienced exactly what you did but my son's teacher actually broke contract and left about 8 weeks into school. I know it can be hard on the kids but my son is over it. Don't worry to much about the kids, they will bounce back.
If you are truly upset for the teacher then you could talk to the school and threaten to raise your own ruckus and see what they say. You may want to get other parents on your side. The majority is heard louder. You also maybe able to sit down and talk with the principal or head honcho and get the real story if you really request it.
My feeling is unfortunately we live in a more and more liberal society. Parents are allowing their children to run the the parents and not the other way around. Parents are not teaching respect for yourself, elders and others (very basic principles that are lost today especially in public schools). The public school system has been made weak. Just twenty years ago when i was in school, i remember the principal having a paddle. I remember never being in trouble but i feared that paddle but i feared my parents even worse. Oddly enough, as i look back at my childhood i think my parents were too lienant on me and now my poor kids are being hammered for it. I dont ever remember saying yes ma'am but my children would think twice before not saying it now. I am one parent that wants my school to reinforce my beliefs. Make your beliefs known!