The guardians entered the school premises this morning and ransacked office furniture and other equipment demanding punishment of those responsible for the death of Aindrila Das (11).
The girl student was severely traumatised when a group of seniors of the school locked her inside a toilet after school hours demanding money from her last week.
She was shortly brought out of the toilet by a sweeper after hearing her screams, who later took her home.
The girl slipped in a state of shock forcing her parents to admit her in a nursing home where she died yesterday. The school principal denied any knowledge of the incident.
Claiming that similar incidents have happened with other junior girls of the Christ Church Girls' School in Dum Dum in the city's outskirts, the parents and guardians accused the principal of inaction, despite full knowledge of the incidents.
"The principal is responsible for her death. She should be arrested," one of the parents said, as others laid siege to the school premises.
Aindrila's parents rubbished school authorities' claims that the girl had not complained to them of her trauma, and accused Principal Helen Sarkar of inaction.
"The girls responsible for ragging her should be identified and strict action should be taken against them," the parents said.
With the parents of the girl registering a police complaint against the school, a police team arrived at the school to question the authorities. As irate parents had already laid a siege outside the school, policemen found themselves unable to access the principal.
"I have lost my daughter. But at least her death has created awareness which will help save many little girls from the menace of ragging," the victim's father Santanu Das said.
West Bengal Education minister Bratya Basu ordered a probe into the incident.