The Lexile Framework for Reading

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confusing Lexile scores

Mildred Martinez Aug 03, 2013 02:32PM EDT

The book Dawn by Uri Shulevitz has a lot of one syllable and multisyllabic words that are difficult and unknown to many children and got a score of 50 compared to I Feel Cold by John Parker that has many common words and got a score of 310.

I feel that I cannot trust some of the scores of many of older and not well-known titles.

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Callie Aug 05, 2013 09:52AM EDT Lexile.com Customer Support

Hi Mildred,

Thank you for your interest in The Lexile Framework® for Reading!

In order to figure out the Lexile® measure of a book or article, text is split into 125-word slices. Each slice is compared to the nearly 600-million word Lexile corpus – taken from a variety of sources and genres – and words in each sentence are counted. The sentence length and difficulty of the vocabulary is examined throughout the book. These calculations are put into the Lexile equation. Then, each slice’s resulting Lexile measure is applied to the Rasch psychometric model to determine the Lexile measure for the entire text.

I think you might find the article “How Accurate Are Lexile Text Measures?” helpful. You can find this article at http://lexile.com/research/18/

Please let me know if you have any additional questions.

Sincerely,

Chris Bianco

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