(biblegateway.com says the KJV is a 12th grade reading level.)
An increasingly popular claim among some King James Only circles is that computer models have proven the KJV to actually be more readable than modern translations.
...These computer models don't actually "read" the text. They can't gauge how comprehensibly the words are assembled into meaningful sentences. Instead, the models assume that the document is written in comprehensible modern English. Taking this for granted, they count the average number of words per sentence and the average number of syllables per word and, using a carefully designed equation, plug that information in to assign the document a score.
..."the Swedish translation of the book of James has a Flesch-Kincaid score of 6.3, while the KJV score for that same book is 7.3. But even I, dumb as I am compared to a computer, can tell you that the KJV is easier for twenty-first-century Americans to read than the Svenska Folkbibeln."
...We can simply pick up a few Bibles and read them ourselves and it will become quickly apparent which ones are easiest to read. The fact of the matter is, many people today are choosing to shift from the KJV to a newer translation precisely because they couldn't make sense of the KJV and found the modern translations more readable. Telling them that they do, in fact, understand the KJV better because the experts or computer models say so is not very convincing.
...from https://carm.org/king-james-onlyism/computer-models-and-the-readability-of-the-../kjv/
mark@chiptape.com