<p>OP-- some med schools will accept some AP and co-enrollment credits. Some won’t. (CA medical schools don’t accept any AP credits, for example.) You will need to check each school’s requirements. There is book called MSAR (Medical School Admission Requirements) which is published every year that lists what each school requires.</p>
<p>If you want use AP credit to skip intro bio in college, you can (if your college allows you to–and not all colleges will).</p>
<p>The MCAT is required of all applicants. No exceptions. You can take the exam any time you wish, but your score is only valid for 2 or 3 years. (Varies by med school.) So it would be foolish to take it before you’re ready to apply.</p>
<p>Also, if you will be starting medical school in 2017 or later, you will be required to take the new 2015 MCAT (which will only become available in Feb. 2015). Med schools will not accepted the current version of the test for applicants in 2016-17 cycle.</p>
<p>You sound as if you want to shorten the length of time it takes to become a doctor. There are no shortcuts. Medical schools require you to have completed your baccalaurate before being admitted. And graduating early may be a bigger deteriment to your med school application than graduating in the typical 4 years. Younger than typical applicants generally have a more difficult time proving to the adcomms they are mature enough to handle medical school and fare less well in their applications than do typical-aged or older applicants.</p>