Gun violence is a critical public safety concern in the United States. In 2006 California implemented a unique firearm monitoring program, the Armed and Prohibited Persons System (APPS), to address gun violence in the state. The APPS program first identifies those firearm owners who be-come prohibited from owning one due to federal or state law,…

With the tragedies of school violence igniting calls for increased safety and security, one popular proposal is to use metal detectors in schools. To address questions about what impact such devices may have on day-to-day safety and on what happens during school violence events, this research brief summarizes what is known about metal detectors in…

Concerns for student safety are a commonly cited reason for the presence of police in schools. But as the nation grapples with the appropriate roles and responsibilities of police more broadly, the time is right to shine a light on what we know about the effects of police in schools. This brief summarizes the research related to this question.…

Public school districts and police departments in the United States often collaborate to address school-based violence and other threats to the safety and well-being of students, teachers, and staff. As a result of these partnerships, law enforcement officers have become an increasingly common presence in schools around the country, even at the…

In response to rising rates of firearms violence that peaked in the mid-1990s, a wide range of policy interventions have been developed in an attempt to reduce violent crimes committed with firearms. Although some of these approaches appear to be effective at reducing gun violence, methodological variations make comparing effects across program…