Lexile and Quantile Resources

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Lexile and Quantile Measures in North Dakota

The LexileR Framework for Reading, commonly referred to as the Lexile Framework, has been linked to the North Dakota State Assessment (NDSA) in English Language Arts (ELA) in grades 3 - 8 and high school. Similarly, The QuantileR Framework for Mathematics has been linked to the NDSA in grades 3 - 8 and high school. Students in North Dakota also may be receiving Lexile and Quantile measures from a variety of different tests and programs used within their local schools. With Lexile and Quantile measures, educators and parents can spur and support student learning.

What is a Lexile measure?

There are two kinds of LexileR measures: Lexile student measures and Lexile text measures. Lexile student measures describe how strong of a reader a child 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 a "L" (for example, 850L), and represent a position on the Lexile scale. Comparing a student's Lexile measure with the Lexile measure of what he is reading help to gauge the "fit" between a student's ability and the difficulty of text. Lexile measures provide a scientific approach for matching students with ability-appropriate texts. Lexile measures help differentiate instruction and monitor growth in reading, putting students on the path to success in school, college and career.

What is a Quantile measure?

Similar to Lexile measures, there are two types of QuantileR measures: a measure for students and a measure for mathematical skills and concepts. The student measure describes what mathematics the student already understands and what mathematics the student will learn in the future. The skill measure describes the difficulty, or demand, in learning that skill. Quantile measures improve mathematics teaching and learning by targeting instruction and monitoring student growth toward learning standards and the interconnectedness of mathematical skills and concepts and identify those elements that are critical to help student learning progress.

Video: An Introduction to The Quantile Framework for Mathematics on the NDSA

More detailed information and supporting online tools and resources are available on the NDSA Portal, under the Administration Resources and Students and Families sections.