The problem? Who knows. Bus drivers are paid less and require less training in dealing with children than teachers. The kids go from teachers who know the consequences of making certain mistakes to bus drivers straight out of their jobs working with sane adults.
At the same time, don't think intense and violent incidents with bus drivers are the norm. I made it through ~12 years of bus riding with only a few drivers swearing at students and one asking "How would you like it if I threw a dead skunk at yo motha?" (to be fair, a student had just thrown a donut hole out of the window of the moving bus). But they'd always give you a smile and a "you're welcome" if you said thanks when you left the bus.
Any other good bus driver stories? Post a comment!