School children attend the first day of classes at the Talaat Harb government primary school, in the popular district of Shubra, Cairo, Egypt, Monday Sept. 28, 2015 (AP)

School children sing the national anthem on the first day of classes during a visit by the Governor of Cairo, Galaal Saeed, to the Talaat Harb government primary school, in the popular district of Shubra, Cairo, Egypt, Monday Sept. 28, 2015 (AP)

School children attend the first day of classes at the Talaat Harb government primary school, in the popular district of Shubra, Cairo, Egypt, Monday Sept. 28, 2015 (AP)

School children sing the national anthem on the first day of classes during a visit by the Governor of Cairo Galaal Saeed, to the Talaat Harb government primary school, in the popular district of Shubra, Cairo, Egypt, Monday Sept. 28, 2015 (AP)