A teenager accused of stabbing a teacher in a school corridor now faces a more serious charge, a court has been told.
The 15-year-old, who cannot legally be identified due to his age, is now charged with section 18 wounding with intent to cause grievous bodily harm to Jamie Sansom.
During a brief hearing at Gloucestershire Magistrates’ Court in Cheltenham on Monday, the boy pleaded not guilty to the new charge, which replaces a previous allegation of attempted wounding with intent.
At a previous hearing, he admitted having a blade.
District Judge Nicholas Wattam said the case should remain in the youth court and remanded the defendant into custody to await trial.
He fixed a case management hearing for August 18.
Addressing the youth, he said: “You have told me you are not guilty of the allegation of assault. There is going to be a trial but I cannot give you a trial date.

Mr Sansom suffered a single stab wound at Tewkesbury Academy in Tewkesbury, Gloucestershire, on July 10.
The academy was locked down and two neighbouring schools were also asked to shut their doors as a “precaution”.
Mr Sansom, who has taught maths at the school since 2017, was discharged from hospital on the same day he was allegedly attacked and said he was “recovering well”.

