This document compiles information from multiple sources to offer readers a snapshot of Preschool Development and Expansion Grant (PDG) states' progress towards implementing a full comprehensive assessment system, as well as the tools they are using for each of the components.

Many states have implemented or expanded state-funded prekindergarten programs in the last decade, encouraged by claims about the benefits that can be expected and the importance of early experiences for children's development, especially for economically disadvantaged children. However, there is remarkably little methodologically adequate…