RTI is a process intended to shift educational resources toward the delivery and evaluation of instruction, and away from classification of disabilities. RTI is not a particular method or instructional approach. The success of RTI depends on the timely delivery of research-based instruction by highly qualified instructors. Although RTI can be implemented at any grade level, it is likely that the development of language and literacy skills will be addressed most prominently in the early grades, kindergarten though third grade.

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