In the Classroom

Today in class we were talking about free speech and responsibility in the classroom. What really struck me was that people were saying it was ok for the teacher to have gone against what the school board had said. I think she should have gotten in trouble for how she did things. Just because it is the right or ethical thing to do, doesn't mean it is ok to break the rules. In the public schools there is curriculum and they need to follow those guidelines. Where do you draw the line to which teachers can break the rules and which can't?