Students complete four years of basic medical education. The four years of study are divided into a pre-clinical and a clinical phase, resulting in a “two plus two” curriculum that combines lecture and laboratory studies with clinical experiences in teaching hospitals, University and private clinics, and community service agencies. After medical school, DO graduates will complete a residency in the field of specialty of choice, including family medicine, surgery or psychiatry. Residencies typically range from three to six years of additional training.