Achieving the goal of universal access to high-quality, developmentally appropriate STEM education for preschool children will require a national agenda. (STEM stands for science, technology, engineering and math.) That is the conclusion of an Early Childhood STEM Working Group. Their new report, Early STEM Matters: Providing High-Quality STEM Experiences for All Young Learners, lays out the the rationale for promoting STEM in preschool and makes recommendations for policy, research and practice to promote early STEM learning.