I recently had a meeting with my academic advisor. She gave me some general info about the interview and selection process.
The main things they look at are:
your gpa is on a 4.0 scale (duh), so if you have a 3.5 then you get a 3.5 in that catagory
take your HESI result as a percent 92% for example. Turn that into a decimal, 0.92. Multiply that by 4 and you get your score for that catagory. For this example .92x4=3.68. you get a 3.68 in this catagory
You are interviewed by two people. Each person evaluates you in 4 seperate catagories based on your answers to the questions they ask. They rate you on a 1-4 scale (4 being the highest). They take your scores and average them. If one interviewer gave you all 4's and one interviewer gave you all 3's that would be 4x4=16 and 4x3=12, 16+12=28 , 28/8=3.5 . That is your score for that section.
Add all those scores together 3.5+3.68+3.5=10.68 then add another 0.5 if you have documented clinical experience and you have your "magic number". The top 60 candidates (or however many they are accepting) get in. The highest score possible is 12.5 (I bet hardly anyone ever gets that) and obviously the higher you can get your score the better your chances are.
It's interesting that the way they do this, all three criteria have an equal weight. If you are particularly strong in one area but weak in another, they might balance each other out. If your grades aren't perfect, but you do well in the interview, you still have a chance.
I'm sure the cut off number is different every semester depending on the applicant pool. But I'm willing to bet that if your score is below 10 or maybe even a 10.5 you aren't getting in for any semester.