At least 10% of children are disabled. They have the same right to education as non-disabled persons and they require active intervention and specialized services. But most disabled children in developing countries receive neither specialized services nor compulsory education. There is great variation among countries, with some having a high educational level for disabled persons while in others such facilities are limited or non-existant. There is a lack in existing knowledge of the potential of disabled persons. Furthermore, there is often no legislation which deals with their needs and a shortage of teaching staff and facilities. So far, disabled persons in most countries have not benefited from a life-long education.