The phrase "an expression of class" is correct and usable in written English.
It can be used to describe something that reflects or signifies social class or status, often in discussions about culture, art, or behavior.
Example: "The designer's latest collection is not just fashion; it's an expression of class that resonates with the elite."
Alternatives: "a sign of social status" or "a reflection of class distinction".
Partly as an expression of class solidarity.
In truth, reading a poem in Latin or Greek seems to me to be no longer an expression of class pretension or elitism, but rather a small act of cultural resistance, even of protest.
For centuries, wedding banquets were an expression of class status, sending a message to the assembled, "symbolically locating a couple within a community," Dr. Wilcox said.
Employing servants was far more than a financial contract or even an expression of the class system: rather, it was an emotional minefield, full of resentment, guilt and grudging obligation on both sides.
For them, "hipsterdom is essentially an expression of middle-class comfort," which is of course also true of American youths, but they do like chancing life in those run-down lofts.
At one juncture, he took to wearing a boilersuit on stage in an expression of working-class solidarity: "We're people like you – we don't dress up like Christmas trees".
If Alger's rags-to-riches stories didn't last, it was essentially because they were too literal — too specific an expression of working-class ambitions of the eighteen-seventies and eighties.
"In Mexico City, hipsterdom is essentially an expression of middle-class comfort".
If nothing else, it's increasingly obvious the shutdown isn't some kind of coherent political gambit so much as an unadulterated expression of class rage from top down.
We believe that the scavenging activity of hydroxyurea alters the intracellular ATP/dATP pools, which are sensed by NrdR and cause its release from nrd promoters, leading to an increased expression of class I RNRs.
The ductal epithelium of BA patients has an aberrant expression of class II antigens [ 35].
