Text Complexity Tools
More than 100 million articles, books and websites have Lexile text measures. However, as an educator you may find additional text that you’d like to measure according to the Lexile® scale. Or, you may want to make Lexile measures quickly available to people who use your school’s library database. We have two free tools available to educators:
The Lexile Analyzer
The Lexile Analyzer is a software program that evaluates the reading demand — or readability — of books, articles and other materials. The Lexile Analyzer measures the complexity of the text by breaking down the entire piece and studying its characteristics, such as sentence length and word frequency, which represent the syntactic and semantic challenges that the text presents to a reader. The outcome is the text complexity, expressed as a Lexile measure, along with information on the word count, mean sentence length and mean log frequency.
Generally, longer sentences and words of lower frequency lead to higher Lexile measures; shorter sentences and words of higher frequency lead to lower Lexile measures. Texts such as lists, recipes, poetry and song lyrics are not analyzed because they lack conventional punctuation.
Free Registration for Educators
Access to the Lexile Analyzer is free for registered users. Initially, you will have a 1000-word limit. If you’d like to analyze longer pieces of text, you can request access to the Professional Lexile Analyzer. Please submit your request through the My Access section of your Profile. Educators can upgrade for free.
The Lexile Titles Database
The Lexile Titles Database contains measures for nearly 300,000 books from hundreds of publishers. You can download the information from this database and integrate it into your library catalog. There is a database for English and Spanish titles.
This database is free for educators who sign a license agreement with MetaMetrics®. Once you register, you’ll receive tab-delimited text files to integrate into your system.
Sign in to access the English Lexile Titles Database and Spanish Lexile Titles Database.
Other Ways to Find Lexile Text Measures
We also have two easy tools to find out the Lexile text measure of more than 275,000 books: