This booklet provides a background and history of the development of the RTI model. It also contains useful information for administrators who are considering implementing RTI and those who would simply like to know more about what it means and how it can be used. While not intended to be a comprehensive implementation guide, the utility of this booklet lies in its broad survey of RTI, beginning with its support in the newest federal laws on identification of learning disabilities and continuing by addressing practical topics such as the principles and components of RTI and concluding with policy considerations and professional development. It is available by ordering online at http://nasdse.org/Default.aspx?TabID=446&CategoryID=20&LangID=0 for $15 a copy. A PowerPoint presentation is also available; click on the link below.