The document discusses social class and social mobility in British society. It defines social class as groups within a society that share economic status, often defined by occupation, education, income, and manners. The British social class system is traditionally divided into three main groups: the upper class of inherited wealth and aristocracy, the middle class of professionals and business owners, and the lower or working class of agricultural/industrial laborers. Social mobility refers to an individual's ability to change social class status, but Britain has low social mobility, with parents' earnings and education levels strongly influencing their children's outcomes.