Oliver, a Year Seven pupil, had previously attended the Jewish school’s nursery and primary schools. A talented footballer, he had represented King David in football, athletics and cross-country running.
King David head-teacher Brigid Smith called his death “a great, great loss” to the school's community. “He will be sadly missed by all of us,” she said.
"Our thoughts and prayers are with Oliver's family at this saddest of times."