Light for the World, a charity which supported the research, said stigma and misinformation surrounding disability as well as a lack of data on the numbers of disabled children contributed to the problem. "People don't see them (children with disabilities) as a worthy investment," Nafisa Baboo, adviser for inclusive education at Light for the World, told the Thomson Reuters Foundation. Many think for example that there's no point investing in their education as people with disabilities can't work." The rights groups said billions of dollars of potential income from the world's poorest countries are being lost through lack of schooling and employment for people who have disabilities. "Children with disabilities are constantly left at the very back of the queue, and the impact on both individuals and economies can be disastrous," Julia McGeown of Handicap International said in a statement.    Read more