Every year as the kids go back to school, you fill out a new emergency contact sheet for them to take back to their teacher. Generally, this includes the names and numbers of trusted family or friends who could help your children in an emergency, as well as their insurance information. No matter how many times you have given this information in the past, you update it every year.
Most schools know the value of being prepared for the unexpected.
Having important names and phone numbers on hand may save you valuable time and energy during a crisis, especially in a stressful situation when it is difficult to think clearly. My parents keep a list like this taped to their kitchen cupboard. It has their work numbers, family members, neighbors, and emergency numbers like the hospital, and our family doctor. When I was in junior high school, I was home watching my youngest brother while my mom went to the bus stop to pick up my sister. We lived in a rural area, so it was a bit of a drive to the bus stop.