I'm going to challenge the authority of my principal.
Why are you going to challenge their authority?
Because his vision conflicts with mine for what to do at my school.
There's nothing wrong with disagreeing with someone's vision, but challenging your principal's authority is not the right way to handle things. If you actually disagree with him, then try to have a calm conversation explaining your perspective. If you rebel against him, he will resent you and won't be willing to listen to your ideas.
I'm not going to tell him my vision but I'm still going to challenge his authority on it.
I'm sorry you think that way, but you shouldn't try to rebel against an authority figure just because you don't agree with them. People need to talk to each other when they have differences so there can be middle ground.