Following a high-quality early care and pre-K experience, the kindergarten-through-third-grade years set the foundation upon which future learning builds; and strengthening this continuum creates opportunities for later success. Key components of a quality experience in K-3 include school readiness and transitions, kindergarten requirements, educator quality, prevention, intervention and assessments, and social and emotional learning and mental health. Education Commission of the States researched the policies and regulations that guide these key components in all 50 states to provide this comprehensive resource and many others. The data in this document show that at least 17 states with pre-K to kindergarten transition guidance specifically address family engagement in statutes and regulations. Additionally, types of family engagement in the transition process may include ensuring information sent to parents/guardians is easily understandable, offering support in improving parenting skills, and offering families and children the opportunity to tour school facilities.