My homework was reasonably, gently and sensitively shredded by the teacher today.
I am totally comfortable with it because well, even if she decides to let me go with that, I would personally shredded it up too. And most probably fire that teacher as well.
At adult learning level, I think there should be a limit to rah-rah-you-are-good-and-i-am-merely-suggesting-a-better-way. Sometimes, it is better to call a bad shot a bad shot with suggestions for improvement rather than to sugarcoat everything and in the end, one could not taste anything else but sugar.