The Flesch Kincaid score is a readability test designed to indicate how difficult a passage in English is to understand. There are two main components: the Flesch Reading Ease score and the Flesch-Kincaid Grade Level. The Reading Ease score ranges from 0 to 100, with higher scores indicating easier readability. The Grade Level correlates with U.S. school grades, indicating the number of years of education needed to understand the text.