The liability with the students. If they get in a fight, you can't break it up. You have to wait and watch a kid get brutalized while the cops come to take care of it. It isn't always that extreme, but it can be and is heading more towards that scenario in more places. I would step in then let myself get fired, but that's me. Then being a dude there is a risk of false physical or sexual abuse allegations. I've been on the receiving end of that more than once. Every time I've been presumed guilty until proven guilty, but never have been guilty. Was arrested and went to court for it once. It was dismissed, but I still suffered some serious fallout from the accusation not only legally but in community perception. I found out who my friends really were then. If you are a dude and anger the wrong savvy girl or savvy mother, then life is going to suck. Then people start thinking stuff about you then it snowballs. Other nasty girls and women will jump on that train. Men, in traitor to their own gender, often support those nasty women. Being a pervert should be a bad thing, but only if you really are one.
That can happen in any public job. As a camp host this year, I had to call law enforcement and one lady accused me of being a perv to deflect her problems with the cop. I wouldn't be surprised if she wrote about me online about that. Another camper a few weeks later told me that the group that got banned wrote some bad things about me in an online review, but I can't find it. Maybe it was taken down? Anyway, off topic.
Then as a commercial driver, you have 100% responsibility with near 0% authority. If you are sent out with an illegal bus and you get in a wreck, you may be at fault. Even though you have no way of fixing it, maybe couldn't have reasonably know about the mechanical problem, you are nonetheless responsible for that bus, the people on it, and the people and property around you. It's a big responsibility. Driving a bus is operating lethal force and should be taken as such every time a driver gets in that bus.