Links & Websites Web page with background information about RTI. http://www.rtinetwork.org/learnCategory: 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. Booklets Introduction to the 3-Tier Reading Model: Reducing Reading Difficulties for Kindergarten Through Third Grade (Fourth Edition) Booklet that provides an introductory 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. Videos 3-Tier Reading Model: Overview Video providing an overview of the 3-tier reading model.