The NYT had an article on this recently: https://www.nytimes.com/2017/07/11/opinion/how-we-are-ruinin...
I took a friend with only a high school degree to lunch. Insensitively, I led her into a gourmet sandwich shop. Suddenly I saw her face freeze up as she was confronted with sandwiches named “Padrino” and “Pomodoro” and ingredients like soppressata, capicollo and a striata baguette. I quickly asked her if she wanted to go somewhere else and she anxiously nodded yes and we ate Mexican.
American upper-middle-class culture (where the opportunities are) is now laced with cultural signifiers that are completely illegible unless you happen to have grown up in this class.