(Theirworld) – Some of South Sudan’s 6000 schools opened for a new academic year last month – but the government does not know how many. Teachers have not been paid. Many of them, and their pupils, are on the run after four years of fighting. In the capital, classrooms are filled with hungry displaced families. The United Nations children’s agency UNICEF estimated in December that three-quarters of children are out of school, threatening to create a second “lost generation” of uneducated adults in a country in danger of becoming a failed state.