Your post made me think of why a school needs a BoB for the students:

For Pudget Sound area - Mt Rainier - every student would need a BoB as their plans (per my VERY limited understanding) call for walking to high ground when the volcano alarm sounds.

For Tornado Alley(s): Every student would need a BoB for a "post" tornado recovery period.

Near LNG facilities: Every student would need a BoB for a fast evacuation if an alarm sounded.

Earthquake country: Already covered better than any offerings I have!

What other reason(s) would a local area have to prepare their students for rapid Bugging Out until Parents could reunite their children.