The aim of this paper is to study how much sensitive efficiency scores are when different approaches proposed in the literature are used to include exogenous factors in efficiency analysis. Specifically, we will concentrate on two crucial issues. One the one hand, although we have an extensive...

The present paper analyzes one of the advantages that a country can derive from people with higher educational levels, i.e. higher tax revenues resulting from the higher earnings from higher school attainment.More specifically, we test whether the marginal revenue obtained by the public sector...