To assist states and local districts with planning for RTI, the National Center on Response to Intervention (NCRTI) has developed this information brief, "Essential Components of RTI--A Closer Look at Response to Intervention." This brief provides a definition of RTI, reviews essential RTI components, and responds to frequently asked questions. The information presented is intended to provide educators with guidance for RTI implementation that reflects research and evidence-based practices, and supports the implementation of a comprehensive RTI framework. [For related report, "What Is RTI?," see ED526859.]