<p>Early childhood is a critical period for the development of social and emotional skills, which form the basis for lifelong success in relationships, communication, and coping. Research has shown that strong social-emotional competence in young children leads to better academic engagement, school success, and positive self-worth, whereas delays in these skills can result in challenges such as academic failure and social difficulties. This contribution to the special issue examines the prevalence of social-emotional development delays among U.S. children and highlights the need for early interventions. At Juniper Gardens Children's Project, researchers working with community partners have focused on creating home-based and center-based interventions to promote healthy parent–child interactions and social-emotional learning. The article reviews outcomes from randomized controlled trials demonstrating the effectiveness of these interventions, particularly in promoting parental engagement and improving children's social competence. A critical emphasis of this research has been a focus on strategies for promoting the widescale implementation of these tools. The article concludes by emphasizing the need for accessible, user-friendly tools and interventions to support the social-emotional development of children from infancy to early childhood.</p>