I think I read that James Cameron majored in something like Physics - and I recall reading once that Paul Verhoeven majored in some form of math as well.
While I’m not knocking film schools (I have a BFA in Photography & filmmaking), success isn’t measured (or even started) in the degree - it’s a starting point.
There are more “directors” graduating from Film Schools that never go on to “direct” ANYTHING than “do”. You’re going there to learn theory, the language of film (which is different than stage, which is a little different from TV and music videos), etc.
Your school will supply you with a camera to use, and you need to shoot shoot shoot! Don’t stop! Figure out stories that are smart (start short), write scripts or have someone you think is good (or would be good) to write them (again, start short), and shoot them. Each time, you’ll get better. You’ll know how you would have done “this” or “that” better - and next time you WILL.
Learn from those who inspire you, don’t copy other people’s work (there’s too much of that), find your own original voice and style, and understand - as was stated above - that someone out there will ALWAYS be better at it than you are, and that’s just fine.
Good luck, hope this helps - and shoot shoot shoot!
-Lew 