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Lexile® and Quantile® Measures in South Dakota

Lexile Measure
There are two kinds of Lexile measures: Lexile reader measures and Lexile text measures. Lexile reader measures describe how strong of a reader a student is. Lexile text measures describe how difficult, or complex, a text like a book or magazine article is. Lexile measures are expressed as numeric measures followed by an “L” (for example, 850L), and represent a position on the Lexile scale. Comparing a student’s Lexile measure with the Lexile measure of what they are reading helps gauge the “fit” between a student’s ability and the difficulty of text.

To find out more about Lexile measures, visit Lexile.com or see our Lexile Overview section.



Lexile

Quantile Measure
Similar to Lexile measures, there are two types of Quantile measures: a measure for students and a measure for mathematical skills and concepts. The student measure describes what mathematics the student likely already understands and what the student is likely ready to learn in the future. The skill measure describes the difficulty, or demand, in learning the skill. Quantile measures are expressed as numeric measures followed by a “Q” and range from Emerging Mathematician (below 0Q) to above 1600Q. Quantile measures help educators and parents target instruction and monitor student growth toward learning standards and the mathematical demands of college and careers.

To find out more about Quantile measures, visit Quantiles.com or see our Quantile Overview section.