On Friday, the teenager told jurors he did not want to go to school on the morning he killed Harvey because “I thought I was going to get hurt that day”.
Giving evidence in his defence for a third day, he told the court he ordered the knife because it was “scary looking”, adding: “If I pulled it out, somebody wouldn’t try to pull out theirs.”
The boy’s barrister, Gul Nawaz Hussain KC, asked him: “We know you took a knife to school with you that morning, why?”
The defendant replied: “In case anyone tried to pull a knife out on me or try to hurt me.”
Mr Hussain said: “Did you want to start any trouble that day?”
The boy said: “No.”
He told the court he did not want to hurt anyone on the day.
Mr Hussain read a Snapchat message Harvey sent to the defendant before school that day, which said: “Is it beef I what [sic]”, which the boy said he read as meaning: “Is it beef or what?”
Asked if he wanted “beef” – a confrontation – with Harvey, the boy answered “no”.