A Gold color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of a shield blazoned: Or, in base pick tools in saltire Sable; a chief per pale of the like thereon to dexter a fleur-de-lis and to sinister a Latin cross all of the last. Attached above the shield, a cat crouching sinister arm grasping toward base Black. Attached below the shield, a Black scroll inscribed in Latin "POSTERUS EST VOS" which means "The Future is You" in English in base metal letters.
Black and gold are the school's colors. The cat is the school's mascot and represents swiftness, ferocity, strength, and dignity. The fleur-de-lis represents Fredericktown's French heritage. The cross symbolizes the community's Christian heritage. The mining tools allude to the area's mining of lead, copper, and cobalt.
The shoulder loop insignia was authorized 14 November 2008.