This report contains reliability and validity evidence for the North Carolina Kindergarten Entry Assessment system (KEA) using a statewide sample of kindergarten children. The KEA was designed as a formative, developmental, authentic, and criterion referenced classroom resource for teachers. As a formative assessment, the KEA focuses on the learning process and is used to support learning while learning is taking place. It is a tool to support teachers and students, and helps provides valuable feedback to inform and adjust both teaching and learning.