I have been to five interviews so far and I asked that question to all of them. I didn't get straight forward answer from Columbia and CRW. However, USC told me it is counted 1/3 in the acceptance process, and temple said it is counted 10% in it. It is different from each school. I heard that if you get interviews from UOP and Tufts, you are (garanteed) in. I hope this helps. Good luck!