This photo was taken by Lamya Lotfey, a Egyptian Coptic Christian. She posted this photo in her Facebook public profile on **Sunday, October 16, 2016 at 5:01 pm** (according to GMT +6, timezone of where I live).
 with the following caption.
> A sign stipulating Islamic veil as a mandatory part of girls' dress code at a school in Egypt's Sharqiya governorate.
Archive.org link to original photo.