Situations may arise that will keep you separated from your children during a crisis that takes place while they are at school. The primary defense of our schools in an emergency is to perform a school lockdown. In an actual emergency, the lockdown may last for hours. Some schools have classroom emergency supplies, but few have anything of substance. Consider providing your children a few supplies they can keep in their backpack so they are available if needed.
Here are a few items I have placed in the School Bag Kits for each of children:
Pencil Case (to hold everything)
Chemical Light Stick
Mask (N95 type)
Fruit Leather x2
List or Emergency Contacts / Family Emergency Plan
School Bag Kit