From the Document: "School preparedness is strengthened by prevention, protection, mitigation, response, and recovery activities. […] This fact sheet describes what mitigation is, how mitigation is connected to the other preparedness missions, what mitigation efforts planning teams may want to consider, and how mitigation activities can be integrated into planning efforts; additional resources are provided, as well. Ideally, schools (public or nonpublic) or school districts will stop emergencies from occurring in the first place. For example, violence can be prevented through the implementation of bullying and hazing prevention programs. However, some incidents cannot be prevented, such as an earthquake that impacts the whole community. Therefore, planning teams need to identify how to eliminate or reduce the impact from (or mitigate) these threats and hazards."
Readiness and Emergency Management for Schools Technical Assistance Center: https://rems.ed.gov/