This is something that does happen in class and at home.
I told the kids I wasn't coming back after the end of the quarter because of school and home life that I needed to take care of. They asked what I was taking in school. I told them I wanted to be a Special Education teacher. One student asked, "SO you are going to work with the stupid kids?" I almost laughed at that, but kept it inside and then redirected the stupid comment. I love the fact that they didn't even know they were in a Special Ed class.