20,000 Sydney high school students evacuated over bomb hoax emails

Police are investigating a bomb threat which has caused havoc at dozens of Sydney schools and seen around 20,000 students evacuated from classrooms.
At many sites, the hoax email arrived during this morning's HSC session which was suddenly cut short.
The minister is promising no student will have to re-sit the exam.
More: 7news.link/2IZ...