The Association of American Medical Colleges (AAMC) has implemented quite a few changes to the Medical College Admission Test (MCAT). Administration of the new MCAT begins in April of 2015; however, registration for this exam opens THIS WEDNESDAY, February 11th. If you are planning on applying to medical school, here are some things you need to know. The 2015 MCAT is different from the old test in a variety of ways; here are a few to note: