An embroidered circular device consisting of a gray area arched at the top and enclosed in a 1/16 inch (.16 cm) black edge displaying the head, shoulder, right front leg and paw of a Cougar in white, with black and gray details, red tongue and gums. Enclosing that, a red circular designation band inscribed "CROSBY HIGH SCHOOL" surrounding the Cougar's head in white block letters. The entire device is edged with a 1/8 inch (.32 cm) black border. Overall dimensions are 3 inches (8.89 cm) in diameter.
Red and white are the school's colors. The Cougar is the school's mascot and represents the cadets' great courage, strength, bravery, and high spirit. The school's motto is "Second to None."
The shoulder sleeve insignia was authorized 31 August 2007.