The teenager, who cannot be named for legal reasons, denies attempting to murder the 15-year-old girl at Thorpe St Andrew School in Norwich.

On Tuesday the Hon Mr Justice Lickley, who has presided over the 11-day trial at King's Lynn Crown Court, addressed the jury of four men and eight women before sending them out to consider their verdict.

The kitchen knife which the boy used in the attack (Image: Crown Prosecution Service)

Thorpe St Andrew School, where the stabbing took place (Image: Denise........

© Norwich Evening News