Research Findings: Kindergarten is the gateway to education and a point of great variability in children's knowledge and skills. As a result, there is keen interest in kindergarten entry assessments (KEAs) to understand and address gaps in early skills. This study rigorously investigated the Commonwealth of Pennsylvania's Kindergarten Entry…

Research Findings: As policymakers expand access to preschool, the sociodemographic composition of preschool classrooms will become increasingly important. These efforts may create programs that increase the concentration of children from low-income families or, alternatively, foster the creation of socioeconomically diverse preschool classrooms.…