Internships, externships, and fellowships provide experience outside of the classroom. They give you a chance to explore a particular field and to gain valuable work experience. You'll find that employers and interviewers are usually interested in asking about your experience in internships, externships, and fellowships. Although you can complete an internship, externship, or fellowship at any time, most U.Va. students choose to do one during the summer after their third year before the full-time job search begins.