Scores, Placements, and Norms
The i-Ready Diagnostic provides a complete picture of student performance with scores that relate to their grade-level and national norms. The scores that result from the Diagnostic describe student performance against grade-level criteria as well as against their peers.
Placement levels provide a criterion-referenced indication of a student’s performance based on grade level. It is determined based on specific scale score ranges for each chronological grade (i.e., the grade in which the student is currently enrolled). Students receive a placement that indicates if they are above grade level, on grade level, one grade level below, or two or more grade levels below.
i-Ready Diagnostic Grades K–12 Scale Score Placement Tables
Information on i-Ready’s grade-level placements, including the definitions and scale scores associated with each placement.
Greater Insight into Student Performance
i-Ready’s 5-Level Placements were developed to provide better insight into student performance relative to grade-level proficiency. They mirror the same placements that are used to calculate student growth in the i-Ready growth model.
i-Ready Diagnostic national norms provide a way for educators to understand student scores as they compare to the performance of students across the country. Norms are reported as percentile ranks that describe how a student’s score compares to the performance of nationally representative samples of student scores in the same grade level taking the Diagnostic at the same time of year. Data on norms is reviewed regularly so updates to norms can be made when warranted.
i-Ready Diagnostic National NormsNorms within i-Ready provide a way for educators to compare how their students are performing relative to other students across the country.
Lexile® and Quantile® Measures
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Using Quantile® Measures from the Diagnostic Results Report
Curriculum Associates partnered with MetaMetrics to conduct a linking study between the i-Ready Diagnostic for Mathematics and the Quantile® Framework for Mathematics.
Using Lexile® Measures from the Diagnostic Results Report
Curriculum Associates partnered with MetaMetrics to conduct a linking study between the i-Ready Diagnostic for Reading and the Lexile® Framework for Reading.
Reading and Mathematics Difficulty Indicators
The i-Ready Mathematics Difficulty Indicator (iMDI)
Data from the i-Ready Diagnostic for Mathematics can be used with iMDI cut scores to determine which students in Grades K–8 exhibit a mathematics difficulty.
The i-Ready Reading Difficulty Indicator (iRDI)
Data from the i-Ready Diagnostic for Reading can be used with cut scores from the iRDI to determine which students in Grades K–8 exhibit a reading difficulty.