Educators in Tennessee use Response to Instruction and Intervention (RTI[superscript 2] ), a multi-tiered system of supports (MTSS), to address problems early for students at risk for poor learning outcomes. Tennessee Department of Education officials sought to support schools and districts implementing RTI[superscript 2] with a tool that educators can use to align their RTI[superscript 2] implementation with the state's expected practices and determine next steps for improving implementation. To support development of a research-informed tool, the Regional Educational Laboratory Appalachia examined how other states have adapted or developed similar tools and how states support districts and schools in using those tools to assess and improve MTSS/response to intervention (RTI) implementation. This study snapshot presents the key findings from the study. [For the full report, see ED603782; for the appendixes, see ED603785.]