Benedictine Military School Headmaster Fr. Frank Ziemkiewicz, O.S.B., welcomes Cadets at the school's main entrance before classes begin. Our boys are greeted each morning at the private, Catholic, college preparatory high school in Savannah, Ga., with a firm handshake and a smile. Review information about Benedictine Military School, a private, Catholic, college preparatory day school for boys in grades 9-12, located in Savannah, Georgia.