The Drill Instructor School (DIS), operated by the United States Marine Corps (USMC), is a specialized training facility responsible for producing Drill Instructors (DIs). These individuals are instrumental in training enlisted recruits within the USMC. The Drill Instructor School, located at Marine Corps Recruit Depot (MCRD) San Diego, California, provides rigorous and demanding instruction to prepare DIs to fulfill their role effectively. The program emphasizes leadership development, drill and ceremonies, military knowledge, physical fitness, and discipline, ensuring that all Marines maintain the high standards expected of them.