From BBC News: Global '100 year gap' in education standards
by Rebecca Winthrop
When it comes to education the differences between the developed and developing worlds remain stark.
There has been a convergence in the number of pupils enrolling in primary school, with many more young children in developing countries now having access to school.
But when it comes to average levels of attainment - how much children have learnt and how long they have spent in school - there remains a massive gap.