If I couldn't have read textbooks (and finished up homework) on the bus, I might have been in SERIOUS trouble for most of my school career. And don't get me STARTED on "back seat Tootsie-Pop Club".
Seriously though, I rode the same bus for all 13 years of public schooling, with the same driver. He was kind of a cranky guy, but he never really yelled at us or set rules. His method of discipline consisted of slowly lowering the volume of the radio (yes, kiddies, back in the 60's we could listen to Top 40 radio on the bus), because the noisier we were, the less we could hear. If the radio went silent, we knew we were in trouble, but if we persisted he would tune in a country station. THAT usually killed any kind of bad behavior. As a last resort, he would pull the bus over, turn around and just stare at us. That would do it.