Medical illustrators usually have a master’s degree from an accredited university. In the United States and Canada, there are only five accredited graduate schools for medical illustration, and each one admits from three to 12 students per year. The Association of Medical Illustrators has a complete list of accredited graduate programs. During the master’s program, medical illustrators take anatomy, cell biology and other graduate level science courses. They also take courses unique to medical illustration, such as surgical illustration.