" Thirty months into the conflict, children are becoming increasingly afraid, angry and frustrated.The risk of a lost generation becomes more acute with each day that they are out of school."
The United Nation's children's agency UNICEF says attacks by the Islamist group Boko Horam in Nigeria and neighboring countries have forced more than 1 million children out of school.
The girls were taken one year ago from a school in the northern Nigerian town of Chibok. He said more than 10 million children are out of school in Nigeria.