High quality early learning experiences can promote young children's development and help to reduce achievement gaps between children from low-income families and children from more affluent families. Early care and education programs also promote parents' ability to support their children's learning, and allow parents to work or go to school. However, affordable, high quality, child care for infants and toddlers from low-income families is scarce. One strategy for improving access to high quality care for infants and toddlers is to form partnerships at the point of service delivery to build seamless systems of care and promote quality across settings. In 2015, the Administration for Children and Families (ACF) awarded 275 Early Head Start (EHS) Expansion and EHS-Child Care (EHS-CC) Partnership grants. Of these, 250 grantees received funding for EHS-CC Partnerships or funding for both EHS-CC Partnerships and EHS Expansion. The EHS-CC Partnership grants support partnerships between EHS grantees and regulated child care centers and family child care homes serving infants and toddlers from low-income families. The partnerships aim to bring together the best of both programs by combining the high quality, comprehensive, relationship-based child development and family services of EHS with the flexibility of child care and its responsiveness to the social, cultural, and work-support needs of families. To better understand the characteristics of early care and education partnerships, including the EHS-CC Partnerships, the Office of Planning, Research, and Evaluation (OPRE) in ACF commissioned a national descriptive study of EHS-CC Partnerships. Through a contract with Mathematica Policy Research, the national descriptive study provides a rich knowledge base about the characteristics of EHS-CC Partnerships and strategies for implementing partnerships in both center-based child care and family child care homes.