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Understanding RIT Score to Percentile Rank Conversion Using 2013 Normative Data

"The 2013 RIT score to percentile rank conversion translates a student's Rasch Unit achievement score on NWEA MAP assessments into a nationally normed percentile. This conversion reveals how a student's academic performance compares to same-grade peers across the United States based on the extensive 2013 norming study. Introduction to NWEA MAP Assessments and the RIT Scale The Northwest Evaluation Association (NWEA) Measures of Academic Progress (MAP) suite of computer-adaptive assessments has long served as a vital benchmark for K-12 educators tracking student growth. Central to this testing methodology is the RIT (Rasch Unit) scale. The RIT..."

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