The company
I think that's your problem. Private school bus companies don't give a fuck about anything, including (especially) their employees and whatever bullshit they get up to. Working for a school district that operates its own buses is the only way the job can be decent, although that's a crap shoot. My district pays great (nearly $35 an hour) and provides excellent health insurance and even a pension if you survive ten years. Other districts in the area pay less than $25 per hour and provide no benefits.