Technical Manual - Renaissance Learning

ValidityRelationship of STAR Early Literacy Scores to Age and School GradeSTAR Early Literacy is indeed measuring literacy skills along a developmentalcontinuum, STAR Early Literacy test scores should increase with age and withyears of schooling. Evidence of this relationship has been obtained in both theCalibration Study and the Validation Study.Calibration Study DataTable 19 lists summary statistics for age and STAR Early Literacy Scaled Scores byschool grade in the Calibration Study.Table 19:Median Age and Scaled Score by Grade in the Calibration StudyMedian ValuesGrade N Age Scaled Score Standard DeviationPre-K 2,584 4.6 509 87K 5,938 5.6 580 85Grade 1 10,768 6.7 703 83Grade 2 6,852 7.7 779 82Grade 3 6,115 8.7 826 63As these data indicate, scores from the STAR Early Literacy Calibration Study doshow the expected pattern of relationship to age and grade level—scores increasesystematically from pre-kindergarten through grade 3. The standard deviationstatistics show that score variability was similar from pre-kindergarten throughgrade 2, but there was much less variability in grade 3.Validation Study DataTable 20 lists summary statistics for age and STAR Early Literacy Scaled Scores byschool grade in the Validation Study.Table 20:Median Age and Scaled Score by Grade in the Validation StudyMedian ValuesGrade N Age Scaled Score Standard DeviationPre-K 610 5.1 426 104K 2,323 6.1 576 108Grade 1 2,578 7.2 749 115Grade 2 1,945 8.2 813 90Grade 3 2,063 9.2 838 76STAR Early LiteracyTechnical Manual56