How much does the interview matter?
I just had mine it was a little over an hour. My interviewer talked about himself asked me about myself, and why penn. Later I asked a bunch of questions and we ended talking about his fiance and what not. He told me “I would fit in great at Pennsylvania” omg is this a good sign?
It’s another glimpse into who you are. Might function as another letter of recommendation. Mine was 30 minutes and both the interviewer and I laughed a lot throughout.
Pretty much matters none at all for elite schools. My interviewers generally tell me it’s just making sure we’re real people, but that it’s the least important data point in admissions