Why doesn't Medical School run on a spring and fall semester system as many undergrad colleges do? Is it just an anatomy problem? (not enough bodies?) You would still require medical school for four years but a class that would start in the spring semster could end with a fall semster and a January graduation. It also would make senese now that the new mcat is given 22 times a year. Students wouldn't need to wait a year if they would take the September Mcat.