Hi Emily,
Each multiple-choice section of the MCAT is scored out of a total of 15. The highest score that you can receive in physical sci. or biological sci. is a 15, and in verbal, the highest is actually a range: 13-15 (studies have found that there's little difference in performance of people who receive 13, 14, or 15 in verbal, so they just condensed the three into a single range). The national average (about) for each subscore is 8; anything above 10 is very, very good. Generally, people strive for at least a 30 composite score to be considered strong candidates, although this is certainly not the rule...many applicants are admitted with scores in the twenties (it really depends on the strength of your overall application). As for the writing sample, this is scored with letters, J-->T; J is the lowest, T is the highest.
As for finding out average stats of matriculated students, check out
www.usnews.com, and following the links through "graduate schools" to browse through the medical schools. You can search for a particular school and pull up different features pertaining to it.
Eventually, you'll also want to order a copy of "Medical School Admissions Requirements" from the AAMC. This gives profiles for each school and explains application procedures, financial aid, etc. To order it, go to
www.aamc.org; I believe you can find it under "publications."
I hope this helps!
😀
