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.
Core5 Supports Reading Gains for Low SES Students
Classes in grades 1 and 2 were randomly assigned to use Core5 or a control group. Core5 users outgained controls on a standardized reading test.
Benefits of Lexia Programs for Low Performers in Kindergarten
Low performers in kindergarten who used Lexia programs outscored controls on a standardized reading test.
Moderate evidence is defined as well-designed, well-implemented quasi-experimental studies with treatment and control groups that may not be randomly assigned.
Lexia Programs Benefit Young Students Eligible for Reading Intervention.
Students eligible for reading intervention who used Lexia programs showed significantly greater gains on a reading test than controls.
Benefits of Lexia Programs for Preschoolers
Preschool classes were randomly assigned to a Lexia group or a control group. Lexia users outgained controls on a standardized test of early literacy skills.
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.
Core5 Progress Predicts Reading Gains on a Standardized Test
Students in grades K - 5 who made the most progress in Core5 showed the largest gains on a standardized reading test.
English Learners and Non-English Learners Benefit from Core5
Both English Learners and non-English Learners showed substantial improvements on aimsweb after a year of Core5 use.