Degree Requirements and Social Stratification

A friend of a friend is a high school drop out. He is Black, an immigrant from Haiti. He has been looking into becoming a truck driver. In applying for truck driving training school, he learned that in order to attend truck driving training school he has to have a GED diploma. What is the relevance of a GED diploma to driving a truck? Is there any wonder that there is more social stratification than in prior eras? Of course, college students don't know trigonometry, so it all balances out. If you can afford to go to college, the three r's are immaterial. But if you can't afford to go to college, you must pass your GED diploma. Our education and credentialing system seems out of whack.