Some schools have unofficial MCAT guidelines that they go by, although if you ask they won't admit to it...but when only people with 27 and higher get interviews, it is kind of obvious that MCAT is a screening factor. I know the Midwesterns use MCAT score heavily during the initial weed out as does Nova. Besides those three, I don't know of any others. Keep in mind that these are three of the most heavily applied to schools out of the DO colleges, so I think they use MCAT scores to get the initial application number down some before they pick their interviewees.