Researchers reveal that parents' effort is more important for a child's educational attainment than the school's effort, which in turn is more important than the child's own effort.
The study found that the socio-economic background of a family not only affected the child's educational attainment -- it also affected the school's effort.
Researcher Professor De Fraja, who is Head of Economics at the University of Leicester, said: "The main channel through which parental socio-economic background affects achievement is via effort.
"Parents from a more advantaged environment exert more effort, and this influences positively the educational attainment of their children.
"By the same token, the parents' background also increases the school's effort, which increases the school achievement. Why schools work harder where parents are from a more privileged background we do not know.
It might be because middle class parents are more vocal in demanding that the school works hard."
The findings suggest there is a relationship between children's performance and the effort put in by parents in supporting their education.