Personalized Teaching Rocks Long Sleeve T-Shirt. Teaching rocks text with three dancing rocks holding books on Math, Science and Literature is a humorous design for educators and student teachers at back to school, birthdays, holidays and graduation. 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