Lexia® PowerUp Literacy® and Lexia® RAPID™ Assessment
Correlations: Students’ EOY level in PowerUp correlated significantly with RAPID scores (p < .001). Significant correlations were found for each strand of PowerUp. The three correlations all fell within the medium range (.4-.6), which is considered strong when evaluating a reading assessment (or program).
Alignments: To further assess the validity of PowerUp, alignments were examined between EOY zone in PowerUp and performance category on RAPID. A clear relationship is seen between EOY zone in PowerUp and RAPID category.