How Scholastic became so tight with Canadian schools

Scholastic has been selling books, pens and posters to students for decades. Along the way, it's become one of the world's largest publishers of children's books, with titles like The Hungers Game and Harry Potter. So how did the relationship between a for-profit U.S. company and Canadian schools become so unshakeable? Also, we ask: Does happiness breed success, or is it the other way around?