Could you sort me please? I'm very driven and like to get what I want, but I am also shy and cannot be around people for to long. I'm very involved in drama and speech club, and am unofficially in charge of those clubs. (The real leaders are idiots, I'm not kidding.) I get pretty good grades but am more focused on musicals and forensics, and getting into a better college than my classmates. I have a small group of friends that are very tight knit. I also can either flirt like a pro or run away.
I feel like you’re a Slytherin! You’re driven, you like to get what you want, and your goal is to get into a better college than your classmates. All these qualities are the epitome of ambition; aka one the main traits of Slytherin house. You’ve put yourself into a position of unofficial leadership in the clubs you’re a part of simply because you feel the actual leaders are incapable of doing their jobs well. I think this says a lot more about you than even if you were put into leadership by others. You’ve seen the lack of ability in the real leaders and said “I’ll do a better job of this without acknowledgment than they can do with it.” You may not have the title, but you have the power to still lead effectively, and that seems to be what matters to you. Basically, everything you mentioned in your description falls neatly into Slytherin.
