Personalized Teachers Make the World Brighter School Quote Long Sleeve T-Shirt. Back to school teaching gift inspirational message says teachers make the world brighter on this Long Sleeve T-Shirt - White 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