Vanderbilt University, Metro Action Commission Head Start, and Mid-Cumberland Head Start will investigate the effects of a social-emotional parenting intervention called Positive Solutions for Families. Positive Solutions for Families is based on the Pyramid Model framework, which is a model for enhancing social-emotional development and addressing challenging behavior. This study has four objectives: (a) to examine the effects of training with individualized support on parent-child interactions, (b) to examine the effects of Positive Solutions for Families implementation on child behavior and social-emotional development, (c) to evaluate family stress and the effects stress has on implementation fidelity and child challenging behavior, and (d) to evaluate parents' perceptions and satisfaction with group training and individualized follow-up phone meetings. Findings from this study will support the use of evidence-based practices with Head Start families, inform practice related to working with and meeting the needs of Head Start families, and promote positive interactions between parents and children that support children's social-emotional development. Head Start Family Service Specialists (FSSs) will also receive training, materials, and support on this intervention so they may sustain the intervention after the study is complete.