[mnm1]

So they left their education behind in Cuba?

Or what you're saying is that they went from middle and upper class to temporarily lower class due to escaping Communism, then back to middle and upper class where they started. Pretty amazing, but it actually proves the point of the article rather than disproves is. People in the middle and upper classes stay there. Often even when they migrate to a different country. It's what happened to my parents so it's not unique to any particular heritage. It's a class phenomenon.