In 2018, one in six of the world's school-aged children — more than 258 million kids —were not in school, according to UNESCO. And as that data shows, progress in increasing attendance has slowed dramatically, with the proportion of children who do not attend primary school barely budging in the last decade.
Today we are launching, at 3ie, a yearlong social media campaign called ‘2020 Hindsight: What Works in Development.’ For our non-American readership, let me briefly explain where the idiom ‘Hindsight is 20/20’ comes from. 20/20 vision is a term used to express that you can see clearly at 20 feet what should normally be seen at that distance.
