A TEENAGER who took a knife to Haute Vallée School to threaten a student as revenge for a previous dispute has been sentenced to more than two years of youth detention after carrying out a range of “terrifying” offences.

He also left a homeowner “fearing for her life” by attempting to rob her.

In February, the boy, who was 14 at the time, entered the packed school cafeteria, where more than 200 students and staff were present – many of whom fled in panic – while wielding a knife.

CCTV footage was played in court of the teenager entering the school canteen and pulling a knife out of his pocket while approaching his victim.

Almost 100 students did not attend the following day due to safety fears, the Royal Court heard yesterday.

The crime spree began with an “unprovoked” assault on a teenage boy in McDonald’s last September. During the attack the boy punched and kneed his victim in the face, damaging his glasses and leaving with him with swelling to the face. The offence was dealt with at a parish hall enquiry.

However, the court was told that less than two weeks later, an “escalating” pattern of offending began – starting with a grave and criminal assault on a family member.

The next day he caused a St Brelade homeowner to “fear for her life” by attempting to rob her at knife-point.

Wearing a black gilet, the defendant appeared at the Royal Court to be sentenced by the Inferior Number.

Crown Advocate Lauren Taylor, prosecuting, said the victim of the attempted robbery could no longer “bring herself to think about going out of the flat when it is dark” as a result of the incident.

Reading from a victim statement, she added: “If I hear any sudden noises, like a bird flying outside the window or a notification from my phone, I am up and anxious even when sitting in my own flat.”

Advocate Taylor said that more than 90 students were absent the day after the Haute Vallée knife attack due to parents’ fears “for their children’s safety and whether the school could keep them safe”.

She asked for a sentence of three years and nine months in detention.

Advocate Adam Harrison, defending, described the Crown’s conclusions as “far too high” and asked for a sentence “which facilitates rehabilitation and which is not crushingly long for a 15-year-old”.

Delivering the court’s sentence, the Bailiff, Robert MacRae, presiding, noted that the defendant was given the “chance not to reoffend” following the parish hall enquiry.

“Unfortunately, instead, you committed many offences,” he added.

Turning to the attempted robbery, Mr MacRae said: “[The victim] opened the door and saw you were only a metre away, and you said to her ‘give me your car keys’ and you pointed a five-inch knife at her stomach.

“She feared for her life, she pushed the door closed with her foot, locking it, and phoned the police.”

Mr MacRae then stated that the boy’s grave and criminal assault at Haute Vallée had left students “distraught” and “inconsolable”.

“Ninety students were absent from school the next day because their parents were worried,” he added. “It must have been terrifying for staff and students alike to see a hooded figure with a concealed face threatening a student with a large knife.”

He concluded: “For this case we have reached the conclusion that in relation to the qualifying offences on this indictment no sentence other than youth detention is suitable.

“And we’re also satisfied that only a custodial sentence would be adequate to protect the public from serious harm, and the totality of the offending is so serious that only custody can be justified.”

The teenager was handed a total sentence of two years and three months in detention and made subject to a restraining order prohibiting him from entering Haute Vallée School and two surrounding roads.

Speaking after the sentencing, a police spokesperson said: “This was a serious and concerning case involving multiple offences across a number of incidents, including behaviour involving a knife, and we welcome the outcome of the court today.

“While this case will understandably cause concern, we would like to reassure the public that it is an isolated incident and that knife crime in Jersey remains rare. However, incidents such as this can have a significant and lasting impact on those affected.

“The overall number of knife-related offences in Jersey is low, both in volume and compared to larger jurisdictions, and the majority involve threats or possession rather than incidents resulting in injury. Jersey does not face a widespread knife problem, but we will not be complacent and will continue to take proactive steps, alongside our partners and the wider community, to keep the Island safe.

“The introduction of the Crime (Public Order) (Jersey) Law 2024 reflects our proactive approach to keeping the Island safe, helping to prevent harm, particularly among young people, and ensuring we stay ahead of potential risks.

 “We would also like to commend the staff at Haute Vallée School for their swift and selfless actions, which undoubtedly prevented more serious harm.”

An Education Department spokesperson added: “The Department for Children, Young People, Education and Skills continues to work closely with schools following the serious incident at Haute Vallée School, earlier this year, to provide support, share guidance and help maintain a safe and reassuring environment for pupils, staff and families.

“The safety and wellbeing of children, young people and staff will always remain our absolute priority. Incidents of this nature are extremely rare, but we recognise the impact this case has had on students, staff, families and the wider community and remain committed to supporting schools.

“We would again like to thank the staff at Haute Vallée School and the States of Jersey Police for their swift and professional response on the day of the incident, which ensured the situation was brought under control quickly and safely. As the individual involved is a child, it would not be appropriate to comment further on the details of the case.”