Links & Websites National website with background information and resources related to RTI. http://www.rti4success.orgCategory: Background InformationOverviewRelated Resources: Links & Websites RTI Overview Module Online module that contrasts RTI with the discrepancy model for special education identification and that gives an overview of each tier within RTI. Links & Websites RTI Action Network, a Program of the National Center for Learning Disabilities National website with RTI background information, resources, and tools. Videos 3-Tier Reading Model: Overview Video providing an overview of the 3-tier reading model. Videos Brief Overview of a 3-Tier Model Video reviewing response to intervention (RTI), including the different tiers, examining data to differentiate, and using various grouping formats.