A student who stabbed his history teacher in the head with an eight-inch kitchen knife has been sentenced to four-and-a-half years in youth detention. The 16-year-old, who cannot be named for legal reasons, was found guilty of wounding with intent after being acquitted of attempted murder by a jury at Swansea Crown Court.

The attack occurred at a secondary school in Pembrokeshire when the student, then 15, asked teacher Vicki Williams to check his homework at the end of the school day. Williams stated that she thought she was "going to die" during the "out of nowhere" assault.

Video footage from the immediate aftermath of the attack shows Williams exiting the classroom, holding her head with the bloodstained knife still in her hand. Another teacher is seen assisting her as they move away from the scene. Williams later told police that she saw "pure hatred" in the boy's eyes as he attacked her. She was taken to a local hospital and treated for a scalp wound, scratches on her back, and minor cuts on her hands.

During the sentencing, Judge Paul Thomas KC stated it was "pure luck" that Williams had not been more seriously injured. He noted that the boy had an undisclosed issue with the teacher and bore her "considerable ill will," but that the motive remained unclear as the student never explained why he carried out the attack. "What I do know for certain is that you took a knife that day to school because you wanted to really hurt her with it," the judge said.

Williams, in a victim impact statement, revealed she had been suffering from post-traumatic stress disorder and was uncertain if she would be able to return to teaching. The prosecution stated the attack was "carefully planned" and that the student had deliberately brought the knife to school.

The defense had suggested the student may have taken the knife to school to "show off" to other boys. The defendant had previously pleaded guilty to possessing a kitchen knife on school grounds.

"The courts have to try to keep teachers safe from attacks on them by pupils," the judge said, referencing the incident as the second case of a student stabbing a teacher in the same Welsh county in recent years. He emphasized the consequences for those who attack teachers, stating they would spend significant time away from friends and normal activities.

Jonathan Pritchard of the Crown Prosecution Service called the incident a "shocking display of violence on a teacher doing their job" and commended the teacher's courage. He added that the CPS's strong evidence led to the convictions, hoping to provide comfort to the victim.