When I was growing up, I was surrounded by family and neighbors who were minimally educated. My grandparents topped out at 5th grade; my parents 6th and 9th grades. My grandparents had to leave school to work on the farm. I respect their hard work and their skills and knowledge. They grew food from the ground up, so to speak. They could make butter, make soap (from fireplace ash, pig fat, and other ingredients I don't know), kill a chicken and make it edible, preserve food (there was a smokehouse for meat, and glass jars for canning), care for a multitude of animals, and many other skills which have been lost by most of us now. Despite their lack of education, I can honestly state that they knew as much as or more than many college graduates today.
They wanted me to be educated. It took 20 years, but I did get a B.A. degree. I make high scores on standardized tests, but I can't hold a candle to my grandparents!