The recent mass shooting at The Covenant School in Nashville, which left six people dead, has once again raised questions about school safety. Experts advise that more resources should be devoted to educating and training students and school staff on recognizing and responding to threats. In addition, experts point to a 2016 school safety technology report from Johns Hopkins University that found there is insufficient evidence to show devices such as weapons detectors, high-tech alarms, and sensors helped curb mass shootings. "There is no universal school safety solution - no one technology will solve all school safety and security issues," the researchers wrote. "The sheer number of schools and school districts across the country - with different geography, funding, building construction and layout, demographics, and priorities - make each one different." Moreover, the limited time, energy, and budget to deal with school safety issues should be used effectively in evidence-based solutions. School leaders should carefully invest time and resources to ensure improved safety, understanding that no system is perfect. Experienced staff members equipped with training are the most valuable assets schools have when it comes to improving school safety.