According to stats I found online Maryland. gov and Wikipedia you have a 1in11 chance of being the victim of a violent crime in MD and about 2.6 police officers per 1000 people.
In 2015 there were 212,623 total arrests and a 52.3% increase in the murder rate from the previous year with a 1%...
Unless your LEO, all BOE property is "zone" from what I'm told and a school bus is an extension of the classroom, don't know under evacuation circumstances. I have asked this question to several Admin types and transportation directors and all advise to leave it in your car.
Georgia Carry...
Lansing Police Department, in a statement issued at the time, said Jordan was involved in a fight with another teenager and the off-duty officer detained him "physically" to prevent him from leaving.