One material factor that may affect social social class differences in educational achievement is overcrowding at home. This is because if there is overcrowding at home, which is often due to parents or guardians having a lower income which means that they can only afford a smaller house, this means that an individual will not have their own space to study in where they can solely concentrate on their studies. A second material factor that may affect social class differences in educational achievement is that parents who are from a higher social class such as the upper middle class have a higher disposable and thus family income and this means that they are able to afford more educational resources for their children as well as having the disposable income to afford private tuition. This means that the child is gaining educational support which then allows them to thrive at school in the educational environment.