First of all, did u retake the OAT? second did u ask the school tht last year were u put on the waitlist only bec of ur OAT score. Did u ask them anything abt how ur interview went, they should have told u something, and Third it depends on school to school, for example in ICO if u were put the waitlist and applied again, u didn't have to give an interview again. so if u have been given the second chance, take full advantage of it, take it positively, u know abt the school, the interview style, so u should have no problem getting in. Good Luck.