Abstract This study examined the effects of the Good Behaviour Game on teacher and student behaviour in a general education classroom. Using a multiple baseline design across classes, baseline rates of disruptive behaviours were collected in each class and the class was divided into two teams. Each team then competed to obtain reinforcers for good behaviour. High baseline rates of disruptive behaviour were reduced significantly when the game was in first introduced. When it was introduced a second time the teachers were instructed to increase their positive comments. Surprisingly, there was little evidence of an increase in positive comments from the teachers. Findings are discussed in the context of the need for teacher training in behaviour analysis.