International development projects that target the education of the world’s very poorest children also significantly improve other young people’s attainment, research indicates. The findings are based on a study of a program targeting marginalized girls in Tanzania, which showed the attainment of other boys and girls at these pupils’ schools significantly improved through ‘spill-over’ effects. For every $100 spent per girl, all students made the equivalent of two years of learning gains.
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Source: ScienceDaily