Hundreds of buses need hundreds of drivers. Where do you suppose they were?
Limited to union drivers only, who don't work until school starts (it's in the contract!)
Driving a school bus is not rocket science. They could have been driven by volunteers.
As for the regular drivers, they were probably out making undocumented purchases with indefinite payment plans at a local Walmart, convenience store, liquor store, etc.
Doesn't matter. If 30 people were assigned to each bus, surely 1 person out of the 30 could drive the bus. All they needed was some leadership and the car keys.
If you can drive at all, you can drive a bus.....