Working on What Works (WOWW) is a solution-oriented classroom management intervention. Following an outline of Berg and Shilts' WOWW programme in the United States, this paper reviews and evaluates WOWW, which has been implemented as a classroom intervention strategy in a Scottish local authority since 2007. Qualitative analysis of the comments of children and teachers from 12 classes suggests that WOWW may be an effective classroom management intervention that helps teachers to feel more confident and also produces tangible improvements in the way children work and behave. Children also report positive differences in how they perceive their class and teacher. (Contains 2 tables and 10 figures.)