Home visiting is an intervention approach widely used to provide individualized services to families living in poverty and children facing risks for poor development. Home visiting programs are typically designed to promote child health and developmental outcomes by preventing child maltreatment, increasing parent support of learning and development, or both (PEW Center on the States, 2010). The research literature on home visiting is growing but remains limited regarding within-program variations in home visiting services, either descriptively or in relation to longitudinal outcomes for children and families enrolled in these programs.