No, Laura is a big city girl who is all wet trying to make this generalization.
Used to be (a while back) that Iowa school bus DRIVERS had to only be 17 years old (and I think a Senior) to drive a route between the school and their home. A number of my classmates were such drivers. All were very solid and self sufficient farm boys who grew up with heavy equipment, and could maneuver those buses and their valuable cargo through blinding blizzards and over slippery roads with aplomb. (Many could probably do a full engine overhaul if needed.) Their accident rate was lower than for "traditional" school bus drivers.
An advantage for small school districts was that these drivers would end their route at home and park the bus overnight in the barn on their farm. Next morning they would pick up their load of kids and drive back to school. (Another advantage, if the bus didn't start on a sub-zero morning, their Dad could pull it with a tractor to start it.) This student/bus driver was a great Iowa tradition for many years.