The nature of school discipline problems has changed over the past few decades. In the 1950s, teachers thought that fighting, stealing, and disrespect toward authority were the most serious forms of student misbehavior. Violent assaults on teachers and pupils, gang warfare, burglary, extortion, and destruction of school property are included among the discipline problems of today. The existence of these problems is well documented. Some of the causes, as suggested by research studies, are peer and gang influences, televised aggression, and poor home conditions. Negative school experiences considered as causal factors include large classes, incompetent and indifferent teachers, lack of authority in the schools, and irrelevant curriculum. Some measures that research findings indicate may help solve the problems are teaching school personnel alternative classroom instructional and management techniques; involving students, parents, and the community in developing corrective measures; strong leadership by principals; and rules of conduct that are specific, publicized, and enforced. (Author/MLF)