Weekly phone-call tutoring restored learning during school closures in five-country trial

A study spanning randomized trials in India, Kenya, Nepal, the Philippines and Uganda found that 20-minute weekly tutoring calls to primary-school children produced substantial learning gains during COVID-19-related school closures. The approach paired widely available mobile phones with tutoring tailored to each child's current skill level, costing about $11 per child, and worked whether delivered by government teachers or NGO staff.