A Children's Court heard the teenager, who cannot be named for legal reasons, pulled out an 8cm knife from his underpants after the victim, 14, moved his foot like he was going to trip the teenager in

the school's locker corridor on February 6.

The police prosecutor told the court the teenager stabbed the victim six times with depths varying between 5cm and 7cm to the neck, upper back and chest, forearms and hand.

He said the teenager told police he had been the victim of constant bullying, but there was no evidence provided to the court to support the claim.

The magistrate described the stabbing as a frenzied attack that left a person with six stab wounds of varying depths.

The court heard the victim underwent emergency surgery at hospital and was released two days later.

The victim suffered no internal injury but required on-going rehabilitation, the court heard.

The court heard the teenager suffered from a behavioural condition and was extremely remorseful for his actions and concerned for the victim's welfare.

The magistrate said the type of offending would normally attract a period of detention, but he placed the teenager on a 12-month probation order due to exceptional circumstances.

The magistrate said a medical report tendered to the court had been of great assistance in sentencing the teenager.

The magistrate said a probationary order would provide assistance to the teenager.

Defence counsel submitted that the teenager's parents had undertaken extreme steps to get support in place for their son.

The teenager pleaded guilty to intentionally causing serious injury.

Two charges, recklessly causing serious injury and assault with a weapon, were dropped by the prosecution.