Last time, my workshop leader spilled the beans on the whole interview/acceptance process. It's completely mathematical. They assign you points based on your GPA and MCAT. If those points are high enough, you get an early interview. 90% of early interviews get an acceptance. Then, in January-onward, they take your MCAT/GPA and look at the three interviewers' grades (Accept, Defer, Reject) and assign a number to those grades. They then give you a ranking compared to other applicants and send out letters.
The problem is there's absolutely no human element whatsoever. They promise otherwise, but it's not true. The guy flat-out told us to LIE to the interviewers and tell them we were basically Mother Theresa in our private lives so we'd get straight-accepts from the interviewers. It was so completely absurd and sickening that I didn't believe him.
I do now.