International Lexile Study 2024-2025

The 2024–2025 International Lexile Study examined the use of Achieve3000 Literacy, a differentiated digital literacy platform that delivers reading texts matched to each learner’s Lexile level and includes scaffolds such as vocabulary support, translation tools, audio, and highlighting.

The analysis included 26,461 students from 303 schools across 28 countries and U.S. territories. Students completed 648,459 literacy activities and logged in 630,641 times during the school year.

Students’ reading development was evaluated using Lexile measures collected from the beginning to the end of the school year. Expected reading growth was calculated using MetaMetrics growth formulas that consider students’ starting Lexile level and the length of time between assessments. Actual growth was calculated by comparing beginning  and end of year Lexile scores.

Across all participating students, the average observed Lexile growth was 190L, compared with an expected growth of 68L. Engagement levels were associated with higher growth. Students completing more than 40 activities showed average growth of 275L, and students completing 40 or more activities with an average first try score of at least 75% demonstrated average growth of 295L.

Highly engaged students across reading levels showed at least 2.8 times expected growth. Advanced readers and below grade level readers both demonstrated substantial increases relative to expected benchmarks, with highly engaged below grade level readers reaching about 4.1 times expected growth and highly engaged advanced readers reaching about 9.7 times expected growth.

The proportion of students considered “on track” for college and career readiness increased from 27.2% at the beginning of the year to 46.0% by the end of the year. These results were observed across multiple regions and student populations.