This new web-based toolkit from the National Resource Center for Permanency and Family Connections (NRCPFC) provides an overview of what we know about sibling relationships for children and youth in foster care; shares children/youth’s views of siblings, as well as legal and policy definitions of siblings; and discusses how siblings are addressed in the Fostering Connections to Success and Increasing Adoptions Act of 2008 and Child and Family Service Reviews. Based on a review of the literature and current practice, the toolkit is organized into ten dynamic practice components. The toolkit discusses each practice component and provides related resources and policy examples. The toolkit also includes an organizational self study, which child welfare agencies can use to review their policies and practices and identify technical assistance and training needs.