School discipline has consistently been recognized as the most important public concern with respect to the nation's schools. Between 1970 and 1973, murders in schools increased by 19 percent, rapes increased by 40 percent, robberies increased by 37 percent, and assaults increased by 77 percent. Teachers, by the nature of their work, are vulnerable to school violence. The National Education Association estimated that 63,000 teachers were physically attacked by students in 1973, and another 239,000 suffered personal property damage. Teachers have also suffered psychological damage. Causes of violence against teachers include escalations of power conflicts, student dissatisfaction with treatment, and teacher harassment of students through sarcasm and unduly authoritative manners. The teachers union recommends that teachers avoid being left alone in classrooms or buildings, call or go for help when disorder breaks out, refrain from challenging intruders alone, use self defense, and take special precautions in hallways and lunch rooms. Teachers should also avoid placing children in situations where they are alone in schools. Children should be encouraged to report acts of violence and should be involved in school safety planning activities. When teachers are assaulted, they should notify the principals and police, complete assault forms, and ask for relief from duty, and remain home until complete recovery has been achieved. Tabular data and 13 references are included.