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Flesch-Kincaid Reading Level

FKGL (Flesch-Kincaid Grade Level) is a readability measure that estimates the U.S. school grade level needed to understand a piece of text. It is calculated using sentence length and word complexity, with higher scores generally indicating more difficult reading material. Teachers can use FKGL as a quick screening tool to check whether instructional texts, assignments, and communications are broadly appropriate for students’ reading levels, while also considering factors such as vocabulary knowledge, background knowledge, text structure, and individual learner needs.

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