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Blog Post
May 16, 2022
You’ve seen the headline; indeed, you’ve probably seen it from us. According to widely cited estimates, about one in three children around the world are lead-poisoned, or about 800 million total. This means that they have blood-lead levels exceeding 5 micrograms per deciliter, a common reference lev...
Blog Post
February 03, 2022
A couple weeks ago, Uganda finally ended the longest national school closure on record, reopening its public schools after nearly two full years. One might anticipate a fairly dramatic decline in learning levels. Indeed, in a very non-scientific poll of my twitter followers, the dominant view was th...
Blog Post
September 01, 2021
When schools in Sierra Leone closed last March, the government was more ready than many to respond. We designed a randomised control trial which assigned 4,399 students from 25 government primary schools to receive—in addition to the standard access to the government’s broadcast that all students re...
Blog Post
May 12, 2021
Each year over two million secondary-school students across Nigeria, Ghana, Sierra Leone, Liberia and The Gambia sit coordinated tests known as the WASSCE. In a new CGD working paper, undertaken by researchers from CGD and IEPA-Ghana, we look at English and maths papers in West Africa’s leading high...