A good MCAT score is one that puts you near or above the average percentile for matriculants at your target medical schools. The highest MCAT score possible is a 528, and the scale is centered so that a 500 represents the 50 th percentile, or average MCAT score. AAMC recommends that admission committees consider applicants near the center of the range. To be on the safe side, aim for a total score of around 510.