You will need to submit an application to various medical schools. The way most students do this is via the American Medical College Application Service - or AMCAS. You will have from around May to December to fill out your application. Submissions usually begin around June 1st and ends in mid-December. While you are finishing up your preparations for the MCAT, you can begin filling out your application. Get them in as soon as possible; preferably the first day you can submit them.