Lexile & Quantile Measures

Wyoming Department of Education > For District Leadership > Content & Performance Standards > Lexile & Quantile Measures

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What is a Lexile measure?

A Lexile measure is a valuable piece of information about either an individual’s reading ability or the difficulty of a text, like a book or magazine article. Lexile measures can predict how well a reader will likely comprehend a text. Recognized as the standard for matching readers with texts, tens of millions of students worldwide receive a Lexile measure that helps them find targeted readings from more than 100 million articles, books and websites that have been measured.

To find out more about Lexile measures, click here.

The Lexile Framework for Reading

The Lexile Framework for Reading is a scientific approach to measuring both text difficulty and reading ability on a scale that was developed by MetaMetrics®. The measure is represented as a number with an L after it, such as 750L.

There are two Lexile measures: the Lexile reader measure and the Lexile text measure. The Lexile reader measure represents the student’s reading ability and the Lexile text measure represents the difficulty of the text. When used together, they can help a reader select reading material that is at an appropriate difficulty level. The Lexile reader measure can be used to monitor growth in reading ability over time.

A reader’s Lexile range is from 50L above to 100L below the reader’s Lexile score. If a student attempts reading material above his/her Lexile range the challenge may be too great for the student to master independently. In a classroom setting where textbooks are used as the main reading material, the texts may not be well-matched to all students.

The Lexile measure (text complexity) of a book is an excellent starting point for a student’s book selection. It’s important to understand that the book’s Lexile measure should not be the only factor in a student’s book selection process. Lexile measures do not consider factors such as age-appropriateness, interest, and prior knowledge. These are also key factors when matching children and adolescents with books they might like and are able to read. Lexile codes provide more information about developmental appropriateness, reading difficulty, and common or intended usage of books. For more information on Lexile codes, please visit: Lexile.com/about-lexile/lexile-codes/.

Lexile Measures in Wyoming

Students in grades 3-8 and grade 11 receive a Lexile measure from the Proficiency Assessments for Wyoming Students (PAWS). Additionally, students can access over 50 popular reading assessments and programs that report out Lexile measures. Visit this page for a complete list.

Students, parents and educators can access Wyoming’s GoWYLD State Library Online Database to access an abundance of online newspaper and magazine articles that match their Lexile range.

Lexile Text Ranges to Guide Reading for College and Careers

Grades CCSS Lexile Text Range
11-12 1185L – 1385L
9-10 1050L – 1335L
6-8 925L – 1185L
4-5 740L – 1010L
2-3 420L – 820L
K-1 Not Available

Lexile Measure Resources

Lexile Measure Tools


What is a Quantile measure?

Similar to Lexile measures, there are two types of Quantile measures: a measure for students and a measure for skills and concepts. The student measure describes what the student is capable of understanding. 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 proficiency standards and the mathematical demands of college and careers.

To find out more about Quantile measures, click here.

The Quantile Framework® for Mathematics

The Quantile Framework for Mathematics, developed by MetaMetrics®, uses a common developmental scale to measure student mathematical achievement, the difficulty of the mathematical concepts, and the materials used for teaching mathematics. The measure will be reported as a number followed by a Q, such as 800Q.

A Quantile measure indicates how well a student understands mathematical concepts and skills at his or her grade level. To interpret what a Quantile measure means for a specific student, two pieces of information are needed: the Quantile score, and the grade level during which the student received the Quantile score. For example, a higher Quantile measure within a specific grade range indicates that a student probably has very few problems with grade-level material (textbooks and assignments) in school. A lower Quantile measure indicates that a student most likely struggles to understand and succeed with grade-level material.

The Quantile Framework consists of a Quantile measure and the Quantile scale. A Quantile measure represents the difficulty of a mathematical skill, concept or application and a developing mathematician’s understanding of these mathematical skills and concepts in the areas of Geometry, Measurement, Numbers and Operations, Algebra, and Data Analysis and Probability. Quantile measures are ex­pressed as numeric measures followed by a “Q” (for example, 850Q), and are placed on the Quantile scale.

Quantile Measure Resources

Quantile Measure Tools

Benefits for Learners, Parents, and Educators:

  • Benefits for Learners: Learn how a student’s Quantile measure can help you and your child’s teacher better understand which skills and concepts your child is ready to learn.
  • Benefits for Educators: Quantile measures empower educators in K-12 mathematics to prepare students for the introduction of new content. Learn how the Quantile Framework can help educators target instruction, track growth and identify appropriate resources.

Quantile Measures in Wyoming

Students in grades 3-8 and grade 11 receive a Quantile measure from the Proficiency Assessments for Wyoming Students (PAWS).

Additional mathematics tests and instructional programs have the ability to report students’ scores in terms of Quantile measures. Click here to access a list of assessments, by assessment type, which provide student Quantile measures.

Quantile Tools

More than 600 textbooks and 3,100 downloadable resources have been aligned to the Quantile Framework.

  • Math Skills Database:Search the Math Skills Database for QTaxons using your standards. The database contains targeted, free resources that appropriately match to students by Quantile measure and math content.
  • Quantile Teacher Assistant: Use the Quantile Teacher Assistant to differentiate math instruction by matching skills and their measures to the relevant standard you are teaching. This tool has been aligned with state mathematics curriculum standards.
  • Math@Home®: Math@Home provides access to a growing number of family-friendly mathematical resources that support the textbook lesson a child is studying in school.

Quantile Resources