Candidates for admission generally must both apply directly to the academy and receive a nomination, usually from a Member of Congress. Students are officers-in-training and are referred to as midshipmen. Tuition for midshipmen is fully funded by the Navy in exchange for an active duty service obligation upon graduation. Approximately 1,200 "plebes" (an abbreviation of the Ancient Roman word plebeian) enter the Academy each summer for the rigorous Plebe Summer. About 1,000 midshipmen graduate. Graduates are usually commissioned as ensigns in the Navy or second lieutenants in the Marine Corps, but a small number can also be cross-commissioned as officers in other U.S. services, and the services of allied nations. The United States Naval Academy has some of the highest paid graduates in the country according to starting salary. The academic program grants a bachelor of science degree with a curriculum that grades midshipmen's performance upon a broad academic program, military leadership performance, and mandatory participation in competitive athletics. Midshipmen are required to adhere to the academy's Honor Concept.