A Gold colored metal and enamel device 1 1/8 inches (2.86 cm) in height overall, consisting of a shield blazoned: "Per fess Azure and paly of seven Or and Gules, in chief a castle of the second. Attached above the shield, a Gold scroll inscribed "1847" in Black letters. Attached below the shield, a Gold scroll inscribed "XAVIER" in Black letters.
Blue and maroon are the school colors. The blue represents loyalty, a noble attribute the cadets have for their country and each other. Maroon (red) signifies courage, virtue the cadets' possess in everything they do. Xavier High School, founded in 1847 as The College of St. Francis Xavier, is an all-boys, Roman Catholic, Jesuit high school located in New York City. The corps of cadets at Xavier traces its lineage as far back as the Civil War, making it one of the oldest JROTC programs in the metropolitan area. Xavier has graduated many young men who have gone on to attend the U.S. Armed Forces Service Academies, including West Point.
The shoulder loop insignia was approved on 7 December 2012.