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Locked doors are a critical factor in reducing school shooting casualties, study finds

May 21, 2026SSN Staff

SAN MARCOS, Texas—Locked doors and consistent access control practices play a key role in reducing casualties during school shootings, according to new research from Texas State University’s Advanced Law Enforcement Rapid Response Training (ALERRT) Center. The report, “The Role of Locked Doors and Access Control in School-Based Active Shooter Events,” was conducted in partnership with the Security Industry Association (SIA) and analyzes 54 school-based active shooter incidents...

Advanced Law Enforcement Rapid Response Training (ALERRT) Center, Hunter Martaindale, Security Industry Association (SIA), Texas State University