This study presents empirical data on the best practice implementation of the Positive Behavior Interventions and Supports (PBIS) Champion Model in schools at each of the three tiers of implementation. The purpose of this study was to identify PBIS best practice evidence indicators for each of the tiers. The design included a review of evidence indicators from a cohort of schools (N = 117) that participated in a three-year PBIS Champion Model workshop series during the 2016-2019 school years and met model criteria for implementation based on the PBIS Champion Model Framework. Evidence indicators were collected and analyzed from schools that met the requirements of each implementation level. While some met the requirements of all three levels, others met those of two, one, or none. Of the 117 schools in the cohort, 113 schools met the Tier 1 level (Bronze) requirement, 94 met the Tier 2 level (Silver) requirement, and 86 met the Tier 3 level (Gold) requirement. The findings indicate a variety of evidence indicators in each tier of the PBIS Champion Model Framework (i.e., processes, protocols, trainings, communication structures) that aligns with Deming's Plan, Do, Study, Act (PDSA) cycle for quality implementation. This study presents a practical resource that can guide successful systemic implementation of PBIS in each tier and can support student academic learning and behavior in those schools. [Note: The page range (35-38) shown on the PDF is incorrect. The correct page range for this article is p36-43.]