The average acceptance numbers vary depending on the quality and reputation of the school. For example, students accepted to Harvard Medical School, considered one of the best in the country, averaged 33R on the MCAT and a 3.84 GPA. The University of Arizona, a public school with a respected program, accepted students with 30P MCAT scores and 3.67 GPA's on average.
The MCAT is a four-part test. Physical sciences, verbal reasoning and biological sciences are multiple choice tests graded on a 1 to 15 scale. The writing sample consists of two essays, each of which are graded by a human and computer grader. The four scores are combined and assigned a letter grade between J (lowest) and T (highest). GPA is a cumulative average of all courses taken during an undergraduate program; 4.0 grade points are given to A's, 3.0 to B's, and so on.
MCAT scores and GPA's are not the only factors medical schools consider when accepting students. Extra-curricular activities that demonstrate integrity and leadership can separate students from the pack and impress admissions offices. Letters of recommendation from professors are also encouraged when applying. A strong impression at a medical school interview can increase an applicant's chances of being accepted, as well.
A strong GPA is a culmination of consistent hard work and focus. It is important to get a firm grasp of what is required to succeed in each class, and a good relationship with your professor can go a long way. The MCAT is a monster of a test, but there are plenty of practice resources that can ease your anxiety. A strong foundation of biology and chemistry is a must. Most students begin studying for the MCAT months before they take it, so set a schedule and be disciplined in your studies. Practice tests are available in print and online.