Even before Jobs started elementary school, his mother had taught him how to read. This, however, led to some problems once he got to school. "I was kind of bored for the first few years, so I occupied myself by getting into trouble." It also soon became clear that Jobs, by both nature and nurture, was not disposed to accept authority. "I encountered authority of a different kind than I had ever encountered before, and I did not like it. And they really almost got me. They came close to really beating any curiosity out of me." His school, Monta Loma Elementary, was a series of low-slung 1950s buildings four blocks from his house. He countered his boredom by playing pranks. "I had a good friend named Rick Ferrentino, and we'd get into all sorts of trouble," he recalled. "Like we made little posters announcing 'Bring Your Pet to School Day.' It was crazy, with dogs chasing cats all over, and the teachers were beside themselves." Another time they convinced some kids to tell them the combination numbers for their bike locks. "Then we went outside and switched all of the locks, and nobody could get their bikes. It took them until late that night to straighten things out." When he was in third grade, the pranks became a bit more dangerous. "One time we set off an explosive under the chair of our teacher, Mrs. Thurman. We gave her a nervous twitch."