Steve You

Good evening, this is Steve. I am currently an upcoming high school senior and interested in applying for Architecture and Urban design major. I understand that I'm posting this on a Grad forum I think that people who are in this community will definitely be more experienced and know what kind of portfolio a college professor/admission department is more likely to prefer. Could someone please tell me some general things that I should definitely include in my portfolio? Or which kind of direction (either more artistic or more design based) should my portfolio be composed of? Thanks so much!