Though school shooters have little in common other than they are male teenagers, they do exhibit behaviors before their attacks - threats on social media, planning the attack, giving away personal items, enlisting accomplices - if only family, friends, educators and police officers could work together.
"These kids are begging us to stop them," she said. "We're just not connecting the dots."
This can deter not only assaults, but also other forms of violence including teen suicide. "A student who kills himself is just as tragic," Klinger said.