To expand on that little bit… A good teacher will know when it's time to start correcting one particular aspect of my dance I think. I trust my instructor not too overwhelm me with technique that I'm not ready to start working on. and I feel like we have a pretty good working relationship. So that at this point, I can listen to 10 minutes of "your raising his shoulder again"… "your raising your shoulder again"…
I definitively don't like a teacher like that. Good teacher is able to teach and correct you with very little usage of words 'no', 'wrong' etc - those words are just spreading negative energy