This twelve minute video explains what RTI is and what it is not.
A website for all things related to RTI-implementation tools, webinars, training modules, research briefs, and ask the expert talks. This site also does a review of tools: progress monitoring (general outcome), progress monitoring (mastery measures), screeners, and instructional intervention tools. Funded through American Institutes for Research and the US Offices of Special Education Programs, TA&D Network, Ideas that Work, this site is ideal for all stages of leading.
Another website for all things RTI, the RTI Action Network's strength lies in its on-going collaboration with schools and districts actively implementing. I consider this site to be BOTH the evidence base as well as the practice base of what it really looks like in schools that are implementing. The network is a program of the National Center for Learning Disabilities, funded by the CISCO Foundation and in partnership with the nation's leading education associations and top RTI experts.