Links & Websites Online module that contrasts RTI with the discrepancy model for special education identification and that gives an overview of each tier within RTI. http://iris.peabody.vanderbilt.edu/module/rti01-overview/Category: Background InformationOverviewTools for Understanding RTIRelated Resources: 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. Resource Pages 3-Tier Reading Model Action Plan Resources to support your campus' implementation of a 3-tier reading model. Resource Pages Campus Needs Assessment Tools Web page with planning and monitoring tools to support campus RTI implementation in the areas of reading, math, and behavior. 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.