Description. The primary purpose of our. Veterinary Student Externship. is to provide a hands-on learning experience for 3rd and 4th year students who are enrolled in a Doctor of Veterinary Medicine program. The program is typically scheduled for 2-week blocks at our hospital. We feel that the students who possess an open mind and a willingness to learn will benefit the most from our externship. Key Responsibilities. The. Veterinary Student Exter...