Wis. Admin. Code Med § 5.04
The holder of a resident educational license may, under the direction of a person licensed to practice medicine and surgery in this state, perform services requisite to the postgraduate training program in which the licensee is serving. Acting under such direction, the resident educational licensee shall also have the right to prescribe drugs and controlled substances and to sign any certificates, reports or other papers for the use of public authorities which are required of or permitted to persons licensed to practice medicine and surgery. The resident educational licensee shall confine the training and entire practice to the postgraduate training program in which the resident educational licensee is taking the training.
Wis. Admin. Code Medical Examining Board § Med 5.04