Over 100 students from 12 high schools in Qatar took part in the first virtual Model United Nations (MUN) conference at QF partner Georgetown University in Qatar (GU-Q).
At least eight people were killed on Friday in a shooting at a high school in Santa Fe, Texas, a local sheriff said, with one person in custody and a second detained.
Police have questioned 45 people, including students and tutors, over the leak but no arrests have been announced.
Education Minister Prakash Javadekar said an investigation was underway into how the mathematics and economics papers were accessed and spread via WhatsApp before the exam.
Student organisers of gun control rallies that drew hundreds of thousands to US streets vowed on Sunday there will be no letup in their campaign for reform.
As Americans reeled from the country's worst school massacre since the horror at Sandy Hook six years ago, President Donald Trump suggested the root cause of the violence was a crisis of mental health.
A 19-year-old man who had been expelled from his Florida high school was due in court on Thursday, charged with 17 counts of murder, after authorities say he opened fire at the school.
A 19-year-old gunman returning to a Florida high school where he had once been expelled opened fire with an assault rifle on Wednesday, killing 17 people and wounding more than a dozen others ...
Kenya's education minister Fred Matiangi said arson was to blame while announcing the death toll from the fire had risen to nine.
A teenage student opened fire on Thursday at a high school in southeastern France injuring three people, including the headmaster, in an attack carried out after he had watched American-style mass shooting videos, the interior ministry said.
A Japanese man has been arrested on suspicion of stabbing his 12-year-old son to death because he was not studying enough for an upcoming examination, local media reported on Tuesday.