 granting medical schools in the U.S. that use AMCAS, which includes 4 Puerto Rico schools.Osteopathic medical schools (granting Doctor of Osteopathic Medicine, or D.O., degrees) have a similar system called the American Association of Colleges of Osteopathic Medicine Application Service (AACOMAS).In 2020, The Association of American Medical Colleges shortens the Medical College Admission Test (MCAT) to rule out experimental issues.