While Europe is certainly one of the richest and most educated areas of the world, some of the challenges faced by the old continent are staggering: low economic growth, structural difficulties in the labour market, and increasing international competition. Politicians and policymakers may...

We use a natural experiment to show that the presence of an external examiner has both a direct and an indirect negative effect on the performance of monitored classes in standardized educational tests. The direct effect is the difference in the test performance between classes of the same...