Class system is a social ranking based primarily on economic position in which achieved characteristics can influence social mobility.
Definition Two:
Class system is a multi-dimensional phenomenon in which populations are ranked along various dimensions such as occupation, education, property, racial or ethnic status, age, and gender. Each of these dimensions is a class system. According to Gerhard Lenski (1966, 80), a class system is “a hierarchy of classes ranked in terms of a single criterion.” Thus, “working class” is a particular class within the occupational class system, while, in the United States, “African American” is a particular class within the American racial-ethnic class system, and, in Canada, “French Canadian” and “First Nations” likewise designate ethnic groups.