Personalized Best Principal Ever School Gifts Long Sleeve T-Shirt. Back to school gift for principal with retro design on a Long Sleeve T-Shirt - White for an elementary or high school principal. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL