In 2013, teacher John Ssentamu sat in a sun-drenched bus on a route he regularly rode between Masaka, a city west of Lake Victoria, to Kampala, the capital of Uganda. He peered over his neighbor’s shoulder, reading a page of the book he was holding: Harry Potter and Sorcerers Stone. Ssentamu was immediately enthralled with the fantasy world. In particular, he noticed a strange word that didn’t look like English: “quidditch.” and asked the stranger if he could take the book home. As he kept reading, he was swept into…