Social reality is structured and differentiated and provides social science with its subject matter. This explains why individuals act as role incumbents and perform specific tasks on a regular basis as manifested at the level of observable event. The relation between teacher and student lies at heart of the realist conception of social structure. The internal relation between roles, distinct from the individual people who fill them and whom they casually affect.The relation between teacher and student is closely internal because each could not exist without each other. Functionalists view education as one of the more important social institutions in society. They emphasize that education contributes to two types of functions: manifest functions, which are the intended and visible functions of education; and latent functions, which are hidden and unintended functions.