Extreme aggressive behavior occurring in a school setting. School violence includes different types of criminal behavior, ranging from theft, property offenses, and vandalism to homicide of teachers and other students. High levels of school violence are not confined to urban schools but take place at suburban and rural schools as well. School violence has been a matter of concern since the 1950s: one study determined that between 1950 and 1975, misbehavior in the school setting shifted from violence against property to violence against persons, sometimes with fatal consequences.