Lessons in all Sudanese schools have been suspended indefinitely amid mass demonstrations over the shooting death of schoolchildren at a rally.
The ruling military authorities ordered schools nationwide to close their doors from Wednesday, the state news agency said.
Protesting students gathered in cities including the capital Khartoum following the killings on Monday.
Five people died in North Kordofan state, four of them school students.
Dozens more were injured after snipers and other gunmen opened fire on a protest in El-Obeid over fuel and bread shortages.