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.
Use of Lexia® Core5® Reading Supports the Development of Early Literacy Skills
In a study with young children identified as at risk for for reading difficulties, those who used Lexia® Core5® Reading outperformed those who did not use the program on tests of pre-literacy skills.
Benefits of Lexia® Core5® Reading in a Low SES School
Second-grade students in a Title I school who used Lexia® Core5® Reading significantly outscored students who did not use Core5 on a standard reading assessment.
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.