The measure used to assess behavior included disciplinary records (for only a subsample of six schools, of which three were control and three were intervention schools); the Problem Behavior Frequency Scales; the Children's Report of Exposure to Violence; Peer Provocation Scale; Life Satisfaction Scale;
the RIPP Knowledge Test; the Problem Situation Inventory; the Beliefs Supporting Aggression Scale; the Attitude Toward Conflict Scale; and the Peer Support for Nonviolence Scale.