Effective transitions to kindergarten engage families and ease children into new environments. Countdown to Kindergarten (CTK), a program in a southeastern U.S. state that serves more than 1,000 children each year and is grounded in Bronfenbrenner's ecological systems theory, partners kindergarten teachers and families to facilitate effective transitions for those who often experience opportunity gaps. Research partners surveyed 238 CTK educators (98% of participating educators). Educators indicated that CTK had a positive impact on increasing family awareness of school expectations, promoting smooth transitions, and developing positive relationships between teachers and families. The perceived quality of CTK and parent investment in CTK significantly predicted educators' belief that CTK exceeded its goals of enhancing connections between the blended systems in which children interact. The model provides curricular approaches, activities, and materials for six sessions prior to kindergarten entry that can be replicated to better serve children and families in need.