What longshanks wrote is true, but lots of schools have a screening-out process where they screen out applicants based solely on GPA and/or MCAT scores.
For example, Touro-NV gives secondaries out to all those who have an MCAT score of 23 or higher. I currently have a score of 24. I dont know if i should retake it. If i retake it and score lower, will i be given a secondary or not?...meaning does Touro-NV look at the lastest mcat score or just your highest?