High rates of suicide, domestic violence and substance abuse on the Tiwi islands are a significant cause of problem behaviours amongst children. Parenting styles also differ from mainstream society, because traditional Aboriginal families are very much extended families, and parents just one point in a wider network which takes responsibility for child rearing. Early intervention programs designed to improve parent-child interaction must therefore be adapted to suit the cultural context in which they are delivered. This report evaluates an early intervention for primary school students and their parents delivered in three Tiwi primary schools from 2000-2004. It was found that 80% of children participating in the program showed some decline in problem behaviours, with 50% showing a marked decline.