What is the significance of this quote, "Finally, when he felt that he had inspected enough mouths and hands, he gave the school a ten-minute lecture on nutrition. Beans were good, he said. [. . .] And exercise was good. In other words, hard work was good for the young body. Picking cotton, gathering potatoes, pulling onions, working in the garden—all of that was good exercise for a growing boy or girl."
Dr. Joseph, the school superintendent, seems to worry more about whether the students are intelligent and learning their lessons. If wants them to have a chance to move off of the plantation.
Dr. Joseph, the school superintendent, seems to worry more about whether the students are strong and healthy than whether they are learning anything at school. That shows that the expectation for black students was that they would go work in the fields, not become educated, professional members of society.
Dr. Joseph, the school superintendent, seems to worry more about whether the students are health and eating well, so that they would have a chance to live better than their parents.