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Should Schools Be Conducting Lockdown Drills? - ed

proportion of school-shooting perpe-trators are themselves students (Wilkie, 2019). Such an argument, however, fails to acknowledge the efficacy of a locked door — the number-one life-saver in school shootings, and a major focus of lockdown drills (Martaindale et al., 2017; Sandy Hook Advisory Commission, 2015). Locked doors