The Marine Corps' Professional Military Education (PME) philosophy is that PME is a career-long study of the foundations of the military profession. The Marine Corps PME program is a progressive learning system designed to educate Marines by grade, throughout their careers. The College of Distance Education and Training (CDET), in cooperation with the Enlisted PME Branch of the Marine Corps University (MCU) and the Lejeune Leadership Institute (LLI), has developed the Leading Marines Distance Education Program (DEP). Leading Marines DEP serves as the foundation of the Marine Corps' PME building block program, and prepares Marines for the responsibilities of being a non-commissioned officer. Leading Marines assists with the development of requisite leadership skills; also, it is the PME requirement for Marines in the rank of Lance Corporal—our future leaders. 

(Source Enlisted PME )