A Quantile® Range represents the difficulty range that optimizes the likelihood of a successful instructional experience. It is calculated by adding and subtracting 50 points from a student's Quantile® Measure. For example, a student with a Quantile® Measure of 738Q would have a Quantile® Range of 688Q–788Q.
If the Quantile® Measure Preference is turned on, students' Quantile® Measure and Quantile® Range can be seen in the Star Diagnostic Report.
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