This study will critically examine the SafeStart model in regard to factors related to the timing of services, pre-enrollment factors, and transitions. The SafeStart program, an integrated service model, is a collaboration between the Pennsylvania Lehigh Valley Early Head Start, and the local child welfare system, Children and Youth Service providers from two neighboring counties. This program is a collaboration between the two service providers designed to serve children who have an open case with their local Children and Youth Services for parent use of drugs or alcohol. This evaluation will demonstrate the effectiveness of the SafeStart intervention program and will determine whether it can be used as a model for children and families in other service areas.