The evaluation funded by the Center for Mental Health Services at the Substance Abuse and Mental Health Services Administration (SAMHSA) is intended to describe the children and families served, including behavioral, emotional, and functional characteristics; determine how children and their families change over time; document the services delivered and the effects and costs of these services; evaluate how systems of care develop over time; investigate the relationship between system change and child and family outcomes; document cultural and linguistic competence; examine the nature and effects of family-driven and youth-guided care; evaluate the effectiveness of factors influencing the implementation of systems of care and evidence-based practices within systems of care; develop evaluation capacity and quality monitoring in system of care communities; and identify factors influencing the sustainability of these programs.