This paper provides evidence on the sources of differences in inequality in educational scores and their evolution over time in four European countries. Using Programme for International Student Assessment data from the 2000 and the 2006 waves, the paper shows that inequality decreased in Germany and Spain (two "decentralised" schooling…

Empirical evidence shows that the quality of learning in public schools is very low in India. There is also a robust belief that private schools offer better-quality learning at a lower cost and are a cost-effective alternative to public schools. Most of the evidence on which this latter claim is based does not correct for selection bias--students…