The Lexile Framework for Reading is a metric designed to measure both the reading levels of texts and the reading levels of readers themselves. It is a proprietary system developed by Metametrics, Inc., but the Georgia Department of Education has adopted the Lexile Framework as part of its assessment program. Also, the Common Core Georgia Performance Standards rely heavily on Lexiles as a quantitative measure of text complexity.

General Information

Lexile Framework Website (MetaMetrics, Inc.):

GaDOE Lexile Measures Page:

GSO Lexile Measures Page:

Reader Measures vs. Text Measures

Lexile measures of both readers and texts use a scale ranging from 200L to 1700L. The scales are correlated such that a reader at a given Lexile level score would be able to comprehend about 75% of a text of that same numerical level. (For example, a reader who scores at the 850L level would find a book that measures 850L to be challenging, but not too difficult to read.)

It is important to note that, by itself, the Lexile measure of a text is not sufficient for determining if a text is appropriate for a reader. There are many other factors, such as the reader's interests, the illustrations in the text, and the subject matter of the text that come into play. The Lexile Framework now includes a set of Lexile Codes to identify texts for which the Lexile score by itself may be especially misleading. Examples include books that are typically read-aloud by an adult to a child, high/low titles, and graphic novels.

Determining Reader Lexile Measures

One component of the Lexile Framework is the measure of a student's reading ability. In Georgia, students' Lexile measures are included on the score reports for the CRCT and GHSGT. (See the GaDOE site for more info.) Other tools for determining a student's Lexile measure can be found on the Lexile site:

Determining Lexile Text Measures

Another component of the Lexile Framework is the measure of the reading level of a text. The system analyzes word frequency (familiarity) and sentence length to determine how difficult a text is to read.
  • To see examples of texts in each Lexile range, see the Lexile Map.
  • To find the Lexile level of a specific book, enter a title or author in the search box on the top right corner of the Lexile web site.
  • To find the approximate Lexile level of a text that has not been officially measured, you can enter a passage of up to 1,000 words in their Lexile Analyzer.
  • To find books available in a specific Lexile range, there are several tools available:

Lexiles and OPACs

Some OPACs, including Destiny, allow patrons to search for books by Lexile level. However, these searches will only show items that include the Lexile level in their MARC records. This may cause patrons to miss books that are on the right level, if those books have not been measured or if the measure is missing from the catalog record.

If you request it, many vendors will include the Lexile level of a purchased book in the MARC record for no additional charge. Some vendors offer a paid catalog enhancement service to fill in the Lexiles for a whole collection (all the titles that have been measured). Do-it-yourself types can download a tab-delimited database of titles in English or Spanish from MetaMetrics and possibly import these into their OPAC.

Another option is to use MARC Match for Lexile. It is available to owners of MARCWizard. Their site states that they "Add the most current and accurate Lexile® Measures to your database. Significantly increase the number of titles available for your Lexile® program."

Lexiles and Online Databases

Many online research databases include Lexile measures for their content and allow users to narrow results based on this parameter.

Lexile support in GALILEO databases:

Lexile Framework and GALILEO (printable):