Im sure they only interview a significant amount. That's why they have you sign up for certain time slots. Plus they have people that do early acceptances to the program, so Im sure they factor those people into how many interview slots they announce, and the projected amount of spaces for the program also. But i heard back fairly quickly after my interview, i think roughly 3 wks or so if I remember correctly. THey are like any other PT prgm, they want to fill up their classes as fast as they can with guaranteed slots and money...