As I told a colleague, I do my best teaching outside the classroom. We cannot separate being a good teacher from being a good person, and we cannot confuse the quality of being a person with the quality of being a student. When we focus on promotion and tenure, on those evaluations, we're kinda paralyzed. Before you bring ridicule and diminishment and denigration upon students, bring it on yourself first, and see how it feels. Before you are quick to lable students whom you don't know and separate them from each other and yourself, see if you like being stereotpyed, classified, depersonalized, shut out, judged, distanced, and misunderstood.
Students use a lot of silence when they talk, and it is so easy to misunderstand their silence.
So, I must get to know them, to see things their way, and read the space between their words and thoughts. Teaching and learning is a human drama far more than it is an intellectual exercise and practice of a technique. But, it is not enough to merely wear the label. We have to be the label. No, it's not enough to be the label, we have to live it.