Personalized 3rd Grade Teacher Best Youth Long Sleeve T-Shirt. World's Best 3rd Grade Teacher design in cute pink and tan comes on a Youth Long Sleeve T-Shirt - Heather gift you can add a personalized name on for a super teacher appreciation present. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)