None of the children who heard Will Cornick boast that he was going to kill Spanish teacher Ann Maguire has ever been quizzed about why they did not tell anyone.

"It is no exaggeration to say those who witnessed this incident will have been deeply traumatised by what they saw.

Teacher Ann Maguire, who was stabbed to death in her classroom, died from “shock and haemorrhage” following an injury to her neck that severed her jugular vein, an inquest has been told.