Positive Behaviour for Learning (PBL) is a school-wide initiative in New South Wales aimed at improving student wellbeing and engagement while reducing challenging behaviors. Implemented by the NSW Department of Education in 2005, it requires whole school commitment and includes professional development, visual signs, and integration of core values into teaching. Evidence suggests PBL can lead to increased attendance, lower suspension rates, and improved motivation, though success depends on dedicated support from staff and administration.