This document provides an overview of the Arkansas Prekindergarten Data Inventory, which is in a separate Excel spreadsheet available upon request (see sidebar). The data inventory includes information about data collected and maintained by the Arkansas Department of Education (ADE), the Arkansas Department of Health Services (DHS), the U.S. Department of Education, and other organizations. Included data elements focus on children from birth through elementary school as well as parents, caregivers, teachers, and preK programs and elementary schools. (author abstract)