To better understand the ways Head Start data are being accessed, analyzed, and used with other preschool data at the state level, the Early Childhood Data Collaborative (ECDC) at Child Trends conducted a survey of Head Start State Collaboration Offices (HSCOs). HSCOs play a role coordinating Head Start systems at the state level with other early childhood programs, and they are well positioned to understand the data collection efforts within a state. The primary goal of the survey was to better understand the types of Head Start data that HSCOs can access and how these data are used, disaggregated, and linked with other early childhood and K-12 data; in addition, the survey aimed to understand data-related supports and infrastructure. The survey was administered alongside the nationwide State-funded Pre-K Data Survey, both of which were used to inform the System Transformation for Equitable Preschools (STEP Forward with Data) Framework—a tool designed to help state leaders answer essential questions about their preschool systems, assess data gaps, establish data collection practices that address equity, and identify action steps for using data to create more equitable preschool systems. (author abstract)