[图书][B] Lockdown drills: Connecting research and best practices for school administrators, teachers, and parents
J Schildkraut, AB Nickerson - 2022 - books.google.com
A comprehensive resource on what lockdown drills are, why they are necessary, and how
best to conduct them. The first book to offer a comprehensive examination of lockdown drills …
best to conduct them. The first book to offer a comprehensive examination of lockdown drills …