School violence is a serious problem that stems from bullying, issues at home, and feelings of being lonely or estranged. To prevent future incidents, schools should profile at-risk students by assessing what they say, their grievances, friends' knowledge of access to weapons, and signs of depression. Overall statistics show the U.S. has the highest rate of school violence deaths in the world, though other countries also experience incidents. Preventing future violence requires involvement from administrators, teachers, security measures, and open communication between the school and students.