Technical Manual - Renaissance Learning

NormingDevelopment of Norms for STAR Early Literacy Test ScoresSchool size. Based on total school enrollment, schools were classified intoone of three school size groups: small schools had under 200 studentsenrolled, medium schools had between 200–499 students enrolled, and largeschools had 500 or more students enrolled.Socioeconomic status as indexed by the percent of school students withfree and reduced lunch. Schools were classified into one of fourclassifications based on the percentage of students in the school who had freeor reduced student lunch. The classifications were coded as follows: High socioeconomic status (0%–24%) Above-median socioeconomic status (25%–49%) Below-median socioeconomic status (50%–74%) Low socioeconomic status (75%–100%)No students were sampled from the schools that did not report the percent ofschool students with free and reduced lunch. The norming sample alsoincluded private schools, Catholic schools, students with disabilities, andEnglish Language Learners as described below.Grades. The STAR Early Literacy Enterprise 2014 norming sample includedstudents from grades K–3.Deciles. Students’ STAR Early Literacy Enterprise Scale Scores within eachgrade were grouped into 10 deciles using the spring 2013 assessment ScaleScores, and then students were randomly sampled from each of the tenachievement decile classifications within each grade level.Tables 47–49 summarize the key norming variables for the STAR Early LiteracyEnterprise norming sample of 134,830 students selected from the normingpopulation of 332,392 students.Table 47: Sample Characteristics, STAR Early Literacy Enterprise Norming Study 2014(N= 134,830 Students)StudentsNational % Sample %Geographic Region Northeast 16.2% 12.8%Midwest 21.4% 21.3%Southeast 26.8% 27.2%West 35.6% 38.7%STAR Early LiteracyTechnical Manual102