Leveling programs that use specially designed computer software, such as Accelerated Reader and Scholastic Reading Counts, read the text of an entire book and determine the reading level based on the number of words, their difficulty, and the complexity of sentence structure. Educators have reported dissatisfaction with these readability formulas especially in the case of non-fiction books. Non-fiction books tend to be graded higher by these formulas than educators themselves would normally grade them because of difficult or technical terminology. Such programs make no allowance for difficult words being explained within the text or in the glossary of the book. We base its reading levels on teachers’ actual experience with students at different grade levels. We feel that Accelerated Reader’s Interest Level category is a more accurate measure for non-fiction than its Reading Level category.

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