On a shield shaped embroidered device blazoned as follows: Or an inescutcheon Sable surmounted by a chevron Argent, overall and rampant sinister a buffalo Sanguine pupil the same, eye of the first, horn of the third, and inscribed across the chief "JAMES I. O'NEILL" in Maroon letters 5/16 inch (.79 cm) in height, all within a 1/8 inch (.32 cm) Maroon border. The overall dimensions are 3 1/2 inches (8.89 cm) in height and 2 5/8 inches (6.67 cm) in width.
The school colors are maroon, white, and gold. The Buffalo is the school mascot.
The shoulder sleeve insignia was authorized 26 February 2009. (TIOH Drawing Number A-10J-878)