How is it possible that roughly 50% of Americans can’t read above a 6th grade level and how are 21% just flat out illiterate? - eviltoast

From https://www.reddit.com/r/NoStupidQuestions/comments/14phpbq/how_is_it_possible_that_roughly_50_of_americans/

Question above is pretty blunt but was doing a study for a college course and came across that stat. How is that possible? My high school sucked but I was well equipped even with that sub standard level of education for college. Obviously income is a thing but to think 1 out of 5 American adults is categorized as illiterate is…astounding. Now poor media literacy I get, but not this. Edit: this was from a department of education report from 2022. Just incase people are curious where that comes from. It does also specify as literate in English so maybe not as grim as I thought.