I am looking for ways to say "low class" and "high class" that would be used in the 1920's on the East Coast of the U.S. I am writing a story narrated by a young girl who is very class-conscious and embarrassed by her family's poverty. I can use many time-appropriate ways to describe status. Thank you!
Have you looked into how class was treated in The Great Gatsby?
Quote here from CliffsNotes:
Of all the themes [in The Great Gatsby], perhaps none is more well developed than that of social stratification. ... By creating distinct social classes — old money, new money, and no money — Fitzgerald sends strong messages about the elitism running throughout every strata of society.
As others have mentioned, it's not always accurate to conflate wealth and status, and I think the "old money" / "new money" distinction is an important nuance to consider for a 1920s setting. It's not just a question of whether someone is wealthy or working class; there's also this factor of where their wealth came from, especially if your story includes any allusions to making money during Prohibition. "New money" is potentially seen as "lower class" than "old money" if the new money is ill-gotten gains.