The document summarizes key aspects of sociological theories of education including functionalism, Marxism, feminism, and interactionism. It also examines research on social class, gender, and ethnicity in relation to differential educational achievement. Some of the studies discussed include Douglas (1964, 1970) on social class differences, Bernstein (1960) on language and social class, and Sharpe (1976, 1994) on changes in expectations for girls over time.