> One of the best professors I ever had took a radically different approach to grading than I've seen anywhere else but history books: he gave you a grade based

> One of the best professors I ever had took a radically different approach to grading than I've seen anywhere else but history books: he gave you a grade based on his perception of your understanding of the material. This is fine--until the professor doesn't like you, personally. You would have to give students much more flexibility to drop courses (basically up to almost the end of class) to avoid the social failure scenarios.