In the aftermath of the 2004 tsunami, the Child Protection Program in Nanggroe Aceh Darussalam (NAD), UNICEF, and NGOs formed an interagency team to streamline child protection responses. Three years after the tsunami, UNICEF commissioned an evaluation of the impact of the response for children in Indonesia. This report lays out the methodology, results, and recommendations from the evaluation. The evaluation found that rudimentary emergency responses launched in 2005 have evolved into substantial protective systems for children in tsunami-affected areas of NAD in 2008. The emergence of this substantial child protection system is in large part due to early linkage of the dual objectives of responding to immediate needs of vulnerable groups of children and welfare and legal systems-building for all children.