The purpose of this grant proposal is to develop a toolkit to support school teams in the development and implementation of culturally responsive Positive Behavioral Interventions and Supports (PBIS). The toolkit is necessary to help school teams address lingering disparities in discipline and to improve school climate. Exclusionary discipline, such as out of school suspensions and expulsion, disproportionately affects ethnically and racially diverse students, and has a devastating effect on student outcomes, including academic achievement, attendance, and graduation. Ethnically and racially diverse students are also more likely to be given a disciplinary consequence for behaviors that require a subjective interpretation of the student’s behavior, which can be influenced by implicit bias. In schools that have implemented PBIS, exclusionary discipline has been shown to decrease overall, but disproportionate discipline persists. The development of a culturally responsive toolkit will support the efforts of school PBIS teams to decrease disproportionate discipline outcomes. The toolkit will assist school teams with the cultural adaptation of core features of PBIS by providing a process for addressing contextual fit of the school and soliciting feedback from the school community. The methodological approach for this project includes both qualitative and quantitative processes. An expert panel will be convened to address the complexities of implementation and cultural adaptation within the context of PBIS. The culturally responsive PBIS toolkit will consist of a comprehensive series of recommended practices, contextual considerations, evaluation tools, and resources, to be used concurrently with analysis of schoolwide data. The toolkit will be piloted in schools in the Pacific Northwest and then disseminated.