Outbreaks of violence at education institutions typically do not rise to the horrific levels of Virginia Tech, Columbine High School, or Oikos University. But incidents that threaten school security--bullying, hazing, online harassment--take place in every month of the year and may occur in any classroom or campus from coast to coast. Schools and…

In hindsight, the warning signs were abundant that Seung-Hui Cho was mentally troubled and potentially dangerous. However, authorities at Virginia Tech did not put together all the pieces until after the 23-year-old student opened fire on the Blacksburg campus on April 16, 2007, and killed 32 people before taking his own life. In the aftermath of…