What does equality in education mean?

In this paper I would like to suggest that we should distinguish between three levels of education in schools: basic education for all, the cultivation of individual talents and capacities; and the selection for higher education and the job market. On each level egalitarians should in my view demand a different kind of equality and a different kind of metric. Since for the selection for higher education and the job market equality of opportunity seems the approriate metric of justice in education, I turn to an analysis of four different conceptions of equality of opportunity.