The purpose of this study is to assess the cost-effectiveness of this Differential Wraparound model, in 5 Children's Aid Societies within Hamilton-Niagara Region, in preventing maltreatment cases from either becoming ongoing protection cases, or the children ending up in out-of-home of out-of community placements, as well as reducing the amount of time in Children's Aid Society care as compared to usual Children's Aid Society risk assessment and protection service alone.