Prevention entails more than security measures and begins long before a gunman comes to school. We need a comprehensive public health approach to gun violence that is informed by scientific evidence and free from partisan politics.

School shootings and widespread community gun violence are far greater in the United States than other nations. America cannot be great and realize its promise of life, liberty, and the pursuit of happiness if our children are not safe from gun violence.

Although security measures are important, a focus on simply preparing for shootings is insufficient. We need a change in mindset and policy from reaction to prevention. Prevention entails more than security measures and begins long before a gunman comes to school. We need a comprehensive public health approach to gun violence that is informed by scientific evidence and free from partisan politics.

A public health approach to protecting children as well as adults from gun violence involves three levels of prevention: (1) universal approaches promoting safety and well-being for everyone; (2) practices for reducing risk and promoting protective factors for persons experiencing difficulties; and (3) interventions for individuals where violence is present or appears imminent.

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