Executive Summary The Scholastic Reading Measure is a low-stakes, computer-adaptive test (CAT) that educators can use to select books, articles, and short reads at the right level for students’ independent reading.
Lexile ® measures make it easy for educators to: • Personalize learning; • Measure student growth; and • Communicate with parents about their child’s progress.¹
Scholastic Inc. collaborated with MetaMetrics ® to create the Reading Measure , and Scholastic Research & Validation partnered with American Institutes for Research (AIR), an independent research firm, to conduct a study to determine if the Reading Measure yielded valid and reliable data about students’ reading levels. There were two primary phases of the work on the Scholastic Reading Measure : the first phase was an expert review of the CAT algorithm and the second phase was a field-based reliability and validity study, which yielded positive results. Pearson correlation coefficients were calculated to determine the test-retest reliability of the Reading Measure . The overall reliability of the Reading Measure across two administrations was found to be high: r = .90. These data are strong evidence of the test-retest reliability of the Reading Measure . In order to determine the convergent validity coefficient, Lexile measures collected from the reading portion of the Scantron Performance Series ® fall assessment, provided by the study’s participating school district, were correlated separately with Lexile measures obtained from two separate administrations of the Reading Measure . Both administrations of the Reading Measure correlated highly and significantly with the Scantron Performance Series assessment (r = .83 for Administration 1, r = .78 for Administration 2, and r = .84 when the average measures were used). These data are strong evidence of the convergent validity of the Reading Measure . Analysis of the data collected in two administrations of the Reading Measure and data supplied by the district in which the study was conducted has confirmed the reliability and validity of the Reading Measure ; that is, the resulting Lexile measures for two administrations of the Reading Measure were consistent and had high levels of convergent validity with the Scantron Performance Series assessment Lexile measure. These results mean that teachers and students can use the Lexile measures determined by the Reading Measure to confidently identify books, articles, and short reads at the right level for students’ independent reading. Results also support using the Reading Measure in conjunction with other information to track students’ reading progress.
1 Retrieved from: https://lexile.com/educators/understanding-lexile-measures/
SCHOLASTIC READING MEASURE RELIABILITY AND VALIDITY STUDY 1
Made with FlippingBook - Online catalogs