Flesch-Kincaid Grade Level

The Flesch-Kincaid Grade Level test takes a similar approach to Flesch reading ease and was developed by Rudolf Flesch and Peter Kincaid. The Flesh-Kincaid test uses the same variables (total word, sentence, and syllable counts) but outputs a score that corresponds to U.S. grade level. Alternatively, the score can be understood as number of years of education required to understand a text.

For example, a Flesch-Kincaid score of 5 corresponds to roughly U.S. 5th grade education, and a score of 18 corresponds to 18 years of education (roughly a graduate-level education).