They persevered because education for them is a matter of life and death.
The attack was on Kamouna camp in Idlib province, near the Turkish border.
Monitoring group reveals the toll on civilian life as ceasefire collapses.
The militant group now controls at least 60 percent of the besieged Palestinian camp in Damascus.
The rights group documents refugees forced back to their home countries.
PLO official says Ahmed Majdalani may be removed as an envoy to Syria over Yarmouk deal.
Eyewitness details helicopter strike on camp's biggest hospital as joint military operation is announced.
Assad pledges to beat back extremists by arming refugees after two-year siege.
Some 18,000 civilians, including 3,500 children, are caught in the camp outside Damascus.
A group aligned with Hamas clashed with ISIS in areas captured yesterday, a monitoring group says.
In a separate advance, rebel groups that have received backing from Assad's Arab and Western foes captured a border crossing with Jordan.
Terror group's militants have taken control of most of the camp, officials say.