TExES Educational Diagnostician (253) Practice Exam

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How does RTI data influence eligibility determination for Specific Learning Disability under IDEA?

RTI data is not used in SLD eligibility.

RTI data showing inadequate progress despite appropriate instruction can support suspected SLD, especially with data from formal assessments and discrepancy analysis; helps rule out insufficient instruction.

RTI data show how a student responds to instruction over time. If progress remains inadequate even after high-quality, evidence-based instruction has been provided, that pattern supports the possibility of a learning disability. This is strongest when RTI data are considered alongside formal assessments and discrepancy analyses, which help illustrate a mismatch between what the student is capable of and what they actually achieve. Put together, these data help rule out insufficient or inappropriate instruction as the sole cause of underachievement and support eligibility for a Specific Learning Disability under IDEA.

RTI data replaces need for formal assessments.

RTI data only informs interventions, not eligibility.