The concept of justice that Rawls discussed in his famous book "A Theory of Justice" has had a profound influence on contemporary political and moral philosophy, as well as, to some extent, philosophy of education. Many philosophers of education have applied or criticized Rawls's concepts -- above all the concepts of autonomy, the person, fair equality of opportunity and the difference principle -- which he developed as an essential part of his theory of justice. In this paper I will discuss very briefly only one of the problems that philosophers of education face when applying his concepts of the autonomous person and the difference principle. The essence of this problem is expressed in the question of whether or not to respect the limits of the applicability of these concepts set by Rawls himself.