Evidence for ESSA
Evidence-based, Research-proven
Lexia programs are proven to improve learning outcomes required by ESSA federal mandates.
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.
Lexia® PowerUp Literacy®
Struggling and non-proficient readers who used Lexia® PowerUp Literacy® significantly outperformed controls on a standardized reading test.
See the full Strong rating