The Child Care Collaboration Study, funded by the Administration for Children and Families Office of Planning, Research, and Evaluation (OPRE), explores collaboration among early care and education programs at both the state and local levels. At the state level, the study describes models of collaboration among state early childhood agencies based on an analysis of data from all states in the U.S. At the local level, the study focuses on child care providers engaged in collaboration in Maryland and Vermont. This research brief presents findings from an analysis of data collected from center-based and family child care programs in these two states. (author abstract)