When war in Sudan's capital forced Sarah al-Sharif and her family to flee, the 19-year-old information technology student left her books and computer behind. Now in Sennar, 30km (18 miles) southeast of Khartoum, she lacks a stable internet connection or passport to travel abroad and like many others sees no way of continuing her studies while fighting between rival military factions rages. The conflict, which began in mid-April, has pushed Sudan's faltering education system into a state of collapse, with many schools shut down or repurposed to host displaced people, and most nation...