RTI is built on the idea of intervening early to prevent failure and to maximize the effectiveness of grade level curriculum and instruction. It is not an initiative or program, but rather a framework for providing high quality curriculum and instruction to all students and intervention support for some students. The National Center on Response to Intervention (NCRTI) believes that comprehensive RTI Implementation will contribute to more meaningful identification of learning and behavioral problems, improve instructional quality, provide all students with the best opportunities to succeed in school, and assist with the identification of learning disabilities and other disabilities.


RTI Model


Tier I: Universal Interventions

Consists of high quality instruction in the student's regular classroom. Tier I meets the needs of approximately 80-90% of students.


Tier II: Target Interventions  

Combines the high quality instruction in the classroom with an evidence-based intervention targeted to meet the specific needs of the students and may be provided in a small group setting. Tier II support is needed by approximately 10-15% of students.


Tier III: Intensive Interventions

More intensive in both frequency of the intervention sessions and a smaller group setting. Student performance data is collected and analyzed frequently to identify success and failures. Tier III represents a small population of students, approximately 3-5%.