The goal of this study is to understand the use of positive behavior support (PBS) practices, as well as challenges and barriers that impact PBS practice implementation, in early care and education programs. PBS practices have been reported to promote social-emotional competence and reduce challenging behaviors in young children when implemented with fidelity. As a result, state and local professional development activities have promoted the provision of training opportunities for the early care and education workforce to learn to use PBS practices. However, there is a lack of program- and teacher-level information about real-world factors leading to implementation of PBS practices and its sustainability. A description of PBS implementation is crucial to bridge the research-to-practice gap and reap the benefits of investments in early childhood initiatives. Two objectives guide this project: Objective 1. Examine the status of implementation and sustainability of PBS practices in Kansas Child Care and Head Start programs. Objective 2. Identify factors that are associated with sustainable implementation of PBS practices.