Of the primary human threats to safety in schools—vandalism, bullying, fighting, sexual abuse, and rampage violence—rampage violence is by far the most deadly and the rarest. Yet over the past 15 years, the world has witnessed a significant increase of rampage violence in schools. In such countries as Brazil; Finland; Germany; Azerbaijan; and, most recently, Pakistan, schools and municipalities have been grappling with how to marry their current safety policies with increasing demands, new technology, minimal budgets, and old buildings. Ensuring safe schools has become a global priority, and, as any superintendent or police chief knows, it is an ever-evolving challenge.