Does a high regional concentration of immigrants of the same ethnicity affect immigrant children's acquisition of host-country language skills and educational attainment? We exploit the exogenous placement of guest workers from five ethnicities across German regions during the 1960s and 1970s in...

How did the introduction of the Bachelor-degree system affect students in Germany? Combining rich data on university students with administrative data on universities' study programs, we exploit variation in the timing of Bachelor-degree implementation across departments. To account for...

Information about teachers' effectiveness at the hiring stage is particularly scarce despite its importance for personnel decisions. Using the German setting of teacher training, I investigate the relationship of teachers' pre-service cognitive and pedagogical skills as measured by two state...

We estimate the relationship between computers and students' educational achievement in the international student-level PISA database. Bivariate analyses show a positive correlation between achievement and computer availability both at home and at school. However, once we control extensively for...

We use the PISA student-level achievement database to estimate international education production functions. Student characteristics, family backgrounds, home inputs, resources, teachers and institutions are all significantly related to math, science and reading achievement. Our models account...

We examine whether the sorting of differently achieving students into differently sized classes results in a regressive or compensatory pattern of class sizes for a sample of national school systems. Sorting effects are identified by subtracting the causal effect of class size on performance...