My friend is currently enrolled in the MS program at Columbia and she did not have an interview as part of her process. She spoke to multiple her friends in the program and only one of them had an interview. So, it seems it's not standard for the MS program, but wish I could get an answer on the MA! I thought I remembered reading when I began my application that there were no interviews as part of the process, but of course now I can't seem to find where I read that. So, who knows! I just want to hear back already ?