The real question of ethics: Does smoking make me look cool?
If you have a "reason" to smoke, you are edgy. If you smoke in the presence of non-smokers or in a public/crowded place, you are an asshole. You don't need to smoke, you really and truly don't.
The teach can be saved by talking to the other teacher (GASP! Adults communicating?!) and can be helped by weak-knees acting as a mediator. The differences in good and bad are ambiguous in certain situations because there are other factors at play, not solely because there exist multiple view-points. You can be a bad person doing good deeds, or a good person doing bad things, it is not rocket science. It is silly to consider because it is a waste of time. I am sorry for even typing this out for wasting your time. The world is not black and white, you do not need to be taught this nor preached to about it. We, as individuals, can observe that the teacher handling wiggle-mouth's bullying case can promptly shove it since they didn't want to deal with the problem until it was violent.
"If both the bully and bullied did something wrong, who should you help?"- Ah yes, of course, the most enlightened answer is to join the gang bang then "help" the victim so they don't feel the need to testify against you. "humans by nature are all virtuous"- except when they knowingly commit wrong.
Hide me in a garbage bin and cleanse me of my filth! For reading such garbage