The findings of an independent review into the circumstances surrounding the death of schoolboy Bailey Gwynne are due to be published.
The multi-agency probe was set up after the 16-year-old was stabbed at Cults Academy in Aberdeen on October 28 last year.
His killer, a 16-year-old youth who cannot be named for legal reasons, was locked up for nine years in April after a jury found him guilty of culpable homicide and carrying weapons.
Following the verdict, Aberdeen City Council, Police Scotland and NHS Grampian commissioned the review to identify any lessons that could be learned from the incident.
Led by Andrew Lowe, chairman of child and adult protection for Renfrewshire, it was tasked with establishing the relationship between Bailey and the other boy before the stabbing.
The review will identify any necessary changes and developments needed in the youth justice system in Aberdeen, and will share its findings with the Scottish Government to determine if there are ''wider issues for the whole of Scotland''.
It will also develop a detailed timeline showing the historical involvement with the killer by the NHS, Aberdeen City Council and Police Scotland and review information-sharing between agencies.
Bailey, a fifth-year pupil with four younger brothers, died from bleeding caused by a single stab wound to the heart during a fight in his lunch hour.
During a five-day trial, the jury at the High Court in Aberdeen heard Bailey squared up to the offender after a remark about his mother before the killer pulled out a knife he told police he bought online and carried ''to look cool''.