PK-3: WHAT DOES IT MEAN FOR INSTRUCTION? Deborah Stipek Stanfo or d Unive ersity Doug Clements Unive ers sity of Denver Cynthia Coburn Northw we estern U Univer rsity Abstract "PK–3” has become a rallying cry among many developmental scientists and educators. A central component of this movement is alignment between preschool and the early elementary grades. Many districts have made policy changes designed to promote continuity in children’s educational experiences as they progress from preschool through third grade— to provide children with a seamless education that will sustain the gains made in preschool and lead to better developmental and learning outcomes overall. This report proposes a conceptualization of productive continuity in academic instruction, as well as in the social climate and classroom management practices that might affect children’s social-emotional development. It also considers ways in which schools might seek to achieve continuity in parents’ and children’s experiences. Finally, the report proposes speci fi c state and district policies and school practices that are likely to promote continuous and meaningful learning experiences. PK-3: What Does It Mean for Instruction? volume 30, number 2 2017 Megan Franke University of California, Los Angeles Dale Farran Vanderbilt University The authors are members of the DREME Net w or k, a group of scholars dedicated to advancing the fi eld of early mathematics research and improving early math education for all children. The DREME Net w or k is funded by a generous grant from the Heising-Simons Foundation.