A social class is essentially a status group. Class is related to status. Different statuses arise in a society as people do different things, engage in different activities and pursue different vocations. Status in the case of class system is achieved and not ascribed. Birth is not the criterion of status. Achievements of an individual mostly decide his status. Class is almost universal phenomenon. It occurs in all the modern complex societies of the world. Each social class has its own status in the society. Status is associated with prestige. The relative position of the class in the social set up arises from the degree of prestige attached to the status. A social class is relatively a stable group. A social class is distinguished from other classes by its customary modes of behaviour.This is often referred to as the life-styles of a particular class. It includes mode of dress, kind of living the means of recreation and cultural products one is able to enjoy, the relationship between parent and children. Life-styles reflect the specialty in preferences, tastes and values of a class. Social classes are open- groups. They represent an open social system. An open class system is one in which vertical social mobility is possible. The basis of social classes is mostly economic but they are not mere economic groups or divisions. Subjective criteria such as class- consciousness, class solidarity and class identification on the on hand and the objective criteria such as wealth, property, income, education and occupation on the other hand are equally important in the class system. Class system is associated with class consciousness. It is a sentiment that characterizes the relations of men towards the members of their own and other classes. It consists in the realization of a similarity of attitude and behavior with members of other classes.
Sociologists have given three-fold classification of classes which consists of - upper class, middle class and lower class.Sorokin has spoken of three major types of class stratification -they are economic, political and occupational classes. Lloyd Warner shows how class distinctions contribute to social stability.Veblen analyzed the consumption pattern of the rich class by the concept of conspicuous consumption. Warner has classified classes into six types- upper-upper class, upper-middle class, upper-lower class, lower-upper class, the lower middle class and lower class. Anthony Giddens's three class model is the upper, middle and lower (working) class.