Personalized Teaching Rocks Youth 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. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.