The Child Welfare System has a responsibility to promote the well-being of the children it serves. Research showing substantial harm resulting from abuse and neglect and from multiple moves in out-of-home care lends weight to the importance of evaluating the well-being of child maltreatment victims. As part of its function of monitoring Illinois Department of Children and Family Services (DCFS), the Children and Family Research Center has periodically conducted studies of the well-being of children involved with DCFS for almost 20 years. These studies present results in a wide range of well-being domains, among them child development, physical health, emotional and behavioral health, education, adaptation to living in out-of-home care, and child resilience. Numerous reports, research briefs, and presentations from these studies are available on this website. The most recent well-being study, the 2017 Illinois Child Well-Being Study, assessed the well-being of children and youth in out-of-home care in 2017-2018. A previous study, the Illinois Survey of Child and Adolescent Well-Being, evaluated the well-being of Illinois youth involved with DCFS in substantiated investigations, whether they remained in their home or were placed in out-of-home care. Results from earlier well-being reports are available as well. Our website users can read widely about the well-being of children involved with DCFS or focus on a particular well-being topic of interest to them.