UNESCO projections ahead of the UN High-level Political Forum (link is external) that is to examine progress in achieving the Sustainable Development Goals, show that when all children should be in school, one in six 6 to 17-year-olds will still be excluded in 2030. Projections also show that 40% of children worldwide will fail to complete secondary education, a figure that is forecast to reach 50% in sub-Saharan Africa where the proportion of trained teachers has been declining since 2000. Read more.