Quantile® range
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 following reports:
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