(Thomson Reuters Foundation) – Insecurity in northern Mali has forced teachers to flee and schools to remain closed, leaving hundreds of thousands of children out of education three months into the academic year, the United Nations said on Friday. More than 380,000 children aged seven to 15 are still out of school almost four years after conflict involving rival armed groups and Islamist militants erupted in the West African nation, according to the U.N. children’s agency UNICEF.