Perhaps more surprising, even the rich in developing countries also lag. For example, in Indonesia, the richest quintile has scores around 450–less than the 500 for the poorest quintile in Korea or the same as the poorest quintile in UK. So in poor countries, the richest are still getting a mediocre education, and the poor cannot be said to be getting any education at all

Perhaps more surprising, even the rich in developing countries also lag. For example, in Indonesia, the richest quintile has scores around 450–less than the 500 for the poorest quintile in Korea or the same as the poorest quintile in UK. So in poor countries, the richest are still getting a mediocre education, and the poor cannot be said to be getting any education at all. (Lant Pritchett, The Rebirth of Education: Schooling Ain’t Learning)