As public preschool is not widely available in the United States, the Biden-Harris administration proposed a comprehensive early childhood agenda to create a world-class voluntary universal preschool program for children and families that addresses racial and other inequities. This report outlines six key components for a preschool program that will support a strong, equitable birth to age 5 system, including: (1) Design a system for preschool to be delivered in multiple settings, including family child care; (2) Support Head Start to continue to expand to serve more preschoolers and their families across the country; (3) Invest in infants and toddlers; excluding them from increased funding would undermine the overall early childhood system; (4) Ensure equitable access and quality, including by directing state and local governments to plan to serve targeted geographic areas and groups of students; (5) Prioritize providing equitable compensation to early childhood educators, regardless of settings; and (6) Ensure that all programs provide a platform that values family voice and shares power with families. By approaching preschool as a critical part of the broader system of early care and education, the administration can expand opportunities for young children across the country.