Mass shootings in schools raise important questions about how best to keep individuals safe and increase survivability in such situations. One of the most common techniques used is lockdown drills, which train individuals to build time and space between them and the threat. Despite their use in 95% of public K-12 schools nationwide, their efficacy…

Although the COVID-19 pandemic closed schools and directed attention to other matters, one issue which had raised concern prior to the pandemic -- the role of lockdown drills in schools -- remains to be addressed as education leaders prepare for the return of students and adults to gathering daily in large groups in schools. By one estimate, 95…