Evidence-based, Research-proven
Lexia programs are proven to improve learning outcomes required by ESSA federal mandates. Lexia has over 20 externally reviewed research studies that meet the standards of evidence under ESSA.
Strong evidence is defined as well-designed, well-implemented experimental studies that include randomly assigned treatment and control groups to eliminate selection biases.
Moderate evidence is defined as well-designed, well-implemented quasi-experimental studies with treatment and control groups that may not be randomly assigned.
Promising studies include correlational evidence that the program has an impact. These studies may not include a control group, but selection effects are addressed statistically.
Struggling and non-proficient readers who used PowerUp significantly outperformed controls on a standardized reading test.
See the full Strong ratingA Cambium Learning® Group Company
