A ton of high school graduates can't do basic math (which also explains their economic illiteracy, like believing that just taxing billionaires more would fix everything[1]).
And also at the same time, we demand college degrees for white-collar jobs that anyone who completed the alleged requirements to graduate high school could totally do. I think this stems from an outdated belief that college is difficult and challenging, and therefore getting through it proves you're exceptionally clever. A notion that has been a joke for at least 15 years if not 20.
So everything is fake. The diplomas are fake, the degrees are fake, and the job requirements are fake. All of it is being used to come up with legal and justifiable ways to pick the people with sufficient brain cells to be entrusted with job responsibilities.
[1] Most college graduates would likely get this question orders of magnitude wrong: If you could split the full net worth of the top 10 billionaires equally among every man, woman, and child in America how big would each one's check be? Correct answer: Just over $6,000. (Of course, we'll ignore how to deal with the market crash caused by forcing the sudden liquidation of their 2 trillion dollars in assets.)