Always makes me laugh when people offer to be a coach and they have no skills.

Doesn’t usually matter

Must paperwork I’ve seen states anything you create is theirs no matter what

It’s standard in most jobs but most people don’t care, like OP.

Half of your questions seem like you don’t think the school district knows about liability and the rest make you seem like a helicopter parent.

If you feel that strongly about a bus, you should homeschool