In this paper, we estimate the effect of pupil's relative age within the first grade of primary school on math and reading test scores at age 15. The main objective is to evaluate the long-term causal effect of relative age in the first grades of primary school on pupil's test in 16 different...

"It is difficult to know whether widening access to schools which provide a more academically oriented general education makes a difference to average educational achievement. We make use of reforms affecting admission to the 'high ability' track in Northern Ireland, but not England. The...