It is now widely acknowledged that the most vulnerable and at risk children are children whom the current systems of education, care and health (especially mental health) are failing. The problem of dealing with 'at risk' children is also a problem of definition as one service provider s definition might often reflect an entirely different social reality from another's. Bringing years of collaborative expertise across many disciplines to the problem, the authors of How to Reach 'Hard to Reach' Children demonstrate how it is possible for all children to meet the following criteria of staying safe, enjoying and achieving, being healthy, making a positive contribution, and economic well-being.