Research

IXL is proven to accelerate learning
Statewide studies show that IXL schools consistently perform better on high-stakes assessments than schools using any other program or method. Read the research to see how IXL produces measurable results for students of all ages, abilities, and backgrounds.
Higher Standardized Test Scores with IXL
  • The math percentile passing rate on the Florida State Assessment (FSA) was 15 points higher in schools using IXL for two years compared to schools not using IXL.
  • Schools using IXL for at least one year had an ELA percentile passing rate 7 points higher compared to schools not using IXL.
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Increasing Proficiency in Math and ELA with IXL
  • IXL schools performed better than non-IXL schools on both the math and ELA sections of the California Assessment of Student Performance and Progress (CAASPP).
  • The expected number of students with proficient scores on the CAASPP would increase by 8.5% for math and 10% for ELA if students mastered one additional IXL skill per week.
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Higher PARCC Scores with IXL
  • The percentile proficiency rate on the PARCC in schools using IXL for one year was 5 points higher in math and 4 points higher in ELA compared to schools not using IXL.
  • Schools using IXL for two years had a PARCC percentile proficiency rate 9 points higher in math and 8 points higher in ELA compared to schools not using IXL.
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Improved Test Scores in Title I and High-ELL Schools
  • The percentile proficiency rate for Title I schools in Minnesota using IXL for three years was 8 points higher in math and 13 points higher in ELA compared to Title I schools not using IXL.
  • Minnesota schools with at least 30% ELLs using IXL for three years had a percentile proficiency rate 7 points higher in math and 12 points higher in ELA compared to high-ELL schools not using IXL.
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Increasing Gains over Time with IXL
  • In 2013, long-term IXL schools in New York outperformed non-IXL schools by 13 points on the math Performance Index (PI).
  • By 2014, the PI gap between the same schools grew to 15 points. In 2015, the PI gap jumped to 18 points.
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IXL Comparable to Additional Instructional Time
  • IXL's effect on math standardized test scores is equivalent to 6.2 weeks of extra instructional time each year, according to results from a study conducted in an Oregon school district.
  • 100% of teachers surveyed said that their students' confidence in learning math increased.
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Success with IXL in Rural and Title I Schools
  • IXL helped a rural high school skyrocket from below the 5th percentile in state rankings to a 97th percentile state ranking.
  • IXL boosted scores on the math section of the California Standardized Test (CST) in a Title I elementary school by 23 points.
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