Based on a new, exceptionally informative and large German linked employer-employee administrative dataset, we investigate the question whether the omission of important control variables in matching estimation leads to biased impact estimates of typical active labour market programmes for the...

I propose a novel way of identifying peer group effects by employing a regressiondiscontinuity design that makes use of the assignment mechanism of students into classes in Brazilian primary schools. I estimate a significant negative effect for students close to the cut-off point from being in...

In this study, I estimate the average causal treatment effect of grade retention on several educational outcome variables, such as completion of upper secondary school, graduation grades in math and German, as well as average final grade using a data set from Germany. The analysis relies on...