On a white horizontal rectangle with arced sides and a 1/8 inch (.32 cm) red border, 2 1/2 inches (6.35 cm) in height and 2 13/16 inches (7.14 cm) in width overall, a red horse's head detailed dark red issuing from dexter between the inscription "BARNWELL" above and "WARHORSES" below in red letters 5/16 inch (.79 cm) in height.
Red and white are the school colors. The motto, "Warhorses," refers to the school's mascot.
The shoulder sleeve insignia was approved 4 June 1991.