The phrase "a cross section of class" is correct and usable in written English.
It can be used to describe a representative sample or a diverse range of individuals from different social classes or educational backgrounds.
Example: "The study aimed to analyze a cross section of class to understand the varying perspectives on education reform."
Alternatives: "a representative sample of class" or "a diverse range of class".
J.P.'s teammates on the Red Dragons come from families of wide diversity, a cross-section of class, race, income and sexual orientation.
The committee is composed of 10 students who represent a cross-section of classes and majors.
The committee is composed of 20 students wjho represent a cross-section of classes and majors.
The Academic Awards Committee is a group of 10 students, representing a cross-section of classes and majors within the College.
The committee consists of 15 students, representing a cross-section of classes and majors in the College.
Committee members are selected by the co-chairs through applications at the start of every academic year so that the group of 15 to 25 students represents a cross-section of classes and majors in the College.
The first in a promised trilogy and shortlisted for last year's Booker, Sea of Poppies gets across its message - that the unlikeliest of people can end up in the same boat - by doing just that, putting a cross-section of classes, castes, religions, sexes and nationalities of 1830s India aboard the one vessel.
"And everybody will feign concern until it goes away and then we go about our business as usual". His call for a solution that comes from a cross-section of classes and races underscored Obama's insistence that he is limited in what he can do to solve entrenched social problems.
He is one of a dozen participants in the May 6 , 2012 demonstration — representing a cross section of the middle-class Muscovites who turned decisively against Mr. Putin — whose trial opened Thursday in a Moscow court.
Another paradox of Turkey's uprising is that many of those now critical of his position — a cross section of urban, secular, mostly middle-class Turks — have benefited from the growing economy that Mr. Erdogan's liberalizing policies created.
