“As my son explained to me one day when I was trying to convince him to ask his teacher to explain something to him, "Mom, you don't understand. The last person in the world I'd let know if I don't understand is my teacher." Too often schooling becomes a vast game in which teachers try to trick students into revealing their ignorance while students try to trick teachers into not noticing it. Getting a good grade, after all, is getting the teacher to think you know more than you do! Is it so different for teachers, whose only source of help and support is precisely the person who rates and rules them?”