Combined Validity Report for Lexia® Core5® Reading

This report documents the validity of the Lexia® Core5® Reading (Core5) technology-based instructional program as a measure of reading ability. A program’s level of validity relates to whether it effectively measures what it claims to measure. Core5’s performance measures were evaluated in relation to established outside assessments, both progress monitoring and outcome measurement tools.

This report provides strong evidence that Core5 performance measures are valid indicators of reading ability. Based on these findings, stakeholders can confidently adopt Core5 as an essential part of their school’s literacy program – not only as an instruction program, but as a key component in reading assessment.  

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