I agree with kcab. I never thought UMC kids were ever taught to be contented by their lot. Why you have tighter and tighter turnover cycles on who are the rich.
But what is UMC? A boy in DD's class has a sister in private high school in NYC. They live in a 10 million apartment, father is an attorney for a successful hedge fund. The mother was complaining to me that her daughter is intimated by the rich kids in her class. Meaning the uber wealthy that have their own drivers and charge cards. Kids in high school.