A 15-year-old girl has been stabbed in the eye, head, back and chest by another teenager at a Surrey school.
Natashia was attacked while waiting in the dinner queue
Natashia Jackman, 15, was attacked with a pair of scissors while she stood in the dinner queue at Collingwood College, Camberley.
She had surgery on her left eyelid before leaving Frimley Park Hospital by a private exit on Friday evening.
Surrey Police said three teenage girls - two aged 14 and one 15 - had been arrested and were being questioned.
One of the 14-year-olds was arrested on suspicion of causing grievous bodily harm with intent, police said.
The other 14-year-old and the 15-year-old were being held on suspicion of conspiracy to commit grievous bodily harm and perverting the course of justice.
Insp Mark Adams said the incident was being taken "extremely seriously".
"The injuries amount to what effectively is grievous bodily harm.
"She's received a number of puncture wounds consistent with a sharp object being used to various parts of her body.
"There is some indication that there may well be some previous involvement with the persons but this is all part of the ongoing investigation."
It is understood Natashia was waiting in the school canteen when a group of pupils started taunting her about her long hair.
The college has offered counselling to any traumatised students
Her father, Humperdinck Jackman, described the moment he saw his daughter in hospital after the attack on Thursday. He said: "She was covered in blood. Her hair was caked.
"She has an injury to her left eye."
College principal Jerry Oddie described Thursday's incident as "shocking and appalling", but said there was a very clear, well-established anti-bullying policy which was enforced rigorously.
"While the police investigation must be allowed to run its course, the college will be pursuing its own disciplinary procedures when the full facts are clear," he said.
Police also revealed the teenager was the victim of an unrelated hit-and-run incident on Christmas Day 2003.
In that case a warrant for the arrest of a 21-year-old man is outstanding after he failed to turn up for a trial at Guildford Crown Court.