The Flesch-Kincaid tests measure how easy or hard text is to read. There are two versions: one gives a reading ease score (higher numbers mean easier reading), and another gives a grade level (like 8th grade or 12th grade). The tests look at sentence length and word length - shorter sentences and shorter words make text easier to read. Schools, the military, and even insurance companies use these tests to make sure their writing is clear and understandable.