Two schoolgirls plotted to murder a classmate by stealing chemicals and drugging her water bottle.

The revelation comes after documents were released detailing the level of violence in public schools throughout Victoria.

The incident at the unnamed school took place last March and was reported to involve two girls believed to be in their first couple of years at high school.

The incident at the unnamed school in Victoria took place last March and was investigated by police

The plan to kill the other girl was uncovered by teachers who found chemicals inside one of the girls' lockers.

Details obtained by the Herald Sun under a Freedom of Information request highlighted more than 1,500 incidents of assault or aggressive behaviour by pupils.

It represented an increase of 399 on the previous year and involved police on 204 occasions - nearly an average of one per day in the school calendar.

The murder plot saw the girls plan to spike the girl's drink bottle 'with the intent to kill', an assistant principal's report said on April 24, the Herald Sun claims.

Police did investigate the incident at a school in the northern suburbs but the potential victim did not press further charges.

Papers also revealed the school investigated internally and two pupils were excluded

Papers also reveal the school investigated internally and two pupils were excluded and support arranged for the victim. But it is unclear if the three girls still attend the school.

Violence inside schools in Victoria increased by more than a third (36 per cent) in a year.

The 2017 figures for public schools throughout the state showed 229 incidents involved items which could be used as weapons.

They ranged from guns, knives, tasers, scissors, screwdrivers, an axe, rocks chairs and pencils.

In 68 incidents (29 per cent), school staff were targeted and 161 were against students.

Weapons used ranged from guns, knives, tasers, scissors, screwdrivers, an axe, rocks chairs and pencils

Among some of the incidents, knives were held up to the throats of teachers and pupils six times and some students had been threatened with guns on school grounds.

On one occasion an axe was swung at a member of staff who had taken a butterfly knife away from a student.

Multiple incidents of threats being made on Facebook were also reported and there were 50 times when knives were threatened to be used, leading to five stabbings.

The Victorian minister for education James Merlino told the newspaper there were a higher number of incidents after new reporting rules were introduced.



