You are right, but in a way that illustrates the pint of the article. I would never expect someone who went to high school here to hold some of the views that Lester has expressed here, unless perhaps they had gone to Punahou. He instead comes across as someone who was raised/went to school on the East Coast. The asking of the question where did you grad is about where you grew up and what values you likely have. Like all stereotypes those can lead you to incorrect conclusions about an individual. But like all stereotypes, they persist because there is some truth to them at the macro level.