It would be worthwhile for you, if accessible, to review the actual “emergency plans for fire and tornado…posted by each main classroom door.” Sounds like that’s different document than the “emergency procedures” you’ve posted here.

“Revised 4-8-97” suggests that the procedures and plan haven’t been reviewed and revised in over 8 years. That would be cause for concern. Lots of things change in 8 years: school staffing (preschool, university and laboratory); philosophy towards emergency response; resources; disaster-specific risks. Annual reviews would be more prudent.

Depending on nature of disaster, the classroom’s cell phone may not function (as we were reminded on Gulf Coast).

Looks like they’ve decided that flood, earthquake or power failure are unlikely, or wouldn’t pose extreme hazard. Playing devil’s advocate…New Madrid Fault produced strongest earthquakes in the country for period ~1800-1900. Iowa would be impacted by New Madrid quake of 6.5.