the school is prolly not going to tell you if you are interviewing for a waitlist spot. and honestly i doubt they can say for sure unless they have given out all the possible acceptances that they can ~200 for a class of 100 for example... until then, i cant see how they can tell you..."yes our class is filled all 100 spots have been committeed to students who are guaranteed to come and so you are just here to get a spot on the waitlist."