The Early Childhood Data Use Assessment Tool is designed to identify and improve data use skills among early childhood education (ECE) program staff so that they can better use data to inform, plan, monitor, and make decisions for instruction and program improvement. Data use is critical in quality ECE programs but can be intimidating for some ECE program staff. This tool supports growth in their data use skills. The tool has three components: a data use checklist to identify ECE program staff’s skills in using child assessment and administrative data, a resource guide to identify professional development resources aligned to goals in improving data use skills, and an action plan template to support planning for developing and achieving data use goals. The results obtained from using the tool are intended to support instruction and program improvement through increased and structured use of data. (author abstract)