Personalized Teacher Thank You Youth Long Sleeve T-Shirt. Personalized Teacher thank you gift Youth Long Sleeve T-Shirt - Heather also makes a great back to school item. Our unique apple and chalkboard teaching art is colorful and cute. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)