Private
I only worry about when you go back when you return to the same situation. It can slap you in the face without you expecting it and be far more devastating than when you left.
Why not? Is it not his job to take care of whoever comes to him regardless of personal connections? Nevermind enemies and allies. You should ask him anyway.
Perhaps both! One never knows. I never went to school, never had that experience. Was it interesting, fun?