Olivier Tercieux, Paris School of Economics
To assign teachers to schools, a modified version of the well-known deferred accep-tance mechanism has been proposed in the literature and is used in practice. We showthat this mechanism fails to be fair and efficient for both teachers and schools. Weidentify a class of strategy-proof mechanisms that cannot be improved upon in terms ofboth efficiency and fairness. We show that these mechanisms perform much better byadopting a large market approach and by using a rich dataset on teachers’ applicationsin France. For instance, the number of teachers moving from their positions more thandoubles under our mechanism.