This paper investigates the effect of obtaining an individual research grant (Vernieuwingsimpuls or IRI -grant) on the careers of Dutch scientists. <strong>The main goal of this scheme of the Dutch Research Council is to provide relatively young, talented scientists with appealing career opportunities...</strong>

This paper examines the causal link that runs from classroom quality to student achievement using data on twin pairs who entered the same school but were allocated to different classrooms in an exogenous way. In particular, we apply twin fixed-effects estimation to assess the effect of teacher...