This means that the economic relations form the heart of any society. But not only do they form the heart of they also shape every other part of society. However this is a two way relationship as the other parts of society then serve to legitimate and maintain the economic infrastructure. These other parts of society are known as the Superstructure . Like a house built on its foundations the superstructure is built on the base.
Education is an important part of the superstructure.
It reproduces the inequalities and social relations of production of Capitalist Society. It serves to legitimate these inequalities under the guise of Meritocracy.