Did you ever see "Stand and Deliver?"
The movie inspired me to become a teacher.
If you don't have time to see the whole movie, at least check out this clip.
What Jamie Escalante does in this is brilliant.
He demonstrates authority: not by force, negotiation, whining or threats. He sticks to his guns and teaches.
Oh you're the finger man. I'm the finger man too. Look what I can do finger man.