On a dark red vertical rectangular embroidered item, arched convexly at top and bottom edged with a 1/8 inch (.32 cm) yellow border, a stylized dark red panther head in profile to the right, detailed and outlined yellow. Attached above the rectangle, a dark red scroll edged with a 1/8 inch (.32 cm) yellow border inscribed PELION in yellow. Attached below the rectangle, a dark red scroll edged with a 1/8 inch (.32 cm) yellow border inscribed PANTHERS in yellow. The overall dimensions are 3 1/4 inches (8.26 cm) in height by 2 7/16 inches (6.19 cm) in width.

Burgundy (soldier red) and metallic gold (yellow) are the school colors. The panther is the schools mascot, representing fierce determination of the Pelion High School cadets in their academic and military pursuits.

The shoulder sleeve insignia was authorized 17 December 2018. (TIOH Drawing Number A-10J-1244)

On a shield shaped gold metal and epoxied device 1 1/8 inches (2.86cm) in height blazoned as follows: Murrey, a panther rampant Sable, eyed, langued and claws Or. Attached below the shield, a black scroll inscribed PELION HS in gold.

The school colors are maroon and gold. Maroon alludes to life, courage, and compassion. Gold exemplifies excellence and honor. The panther portrays agility and guile, representing the tenacious pursuit of excellence and achievement gained through the intense academic demands and rigorous training of the ROTC program.

The shoulder loop insignia was authorized 17 December 2018.