State education officials visited Punchbowl Public School Thursday morning in the wake of the claims by a former teacher.

Under anonymity, referred to only as ‘Mrs A’, the woman told News Limited that in 2014 students as young as 10 have shown signs of being lured by groups like the so-called Islamic State.

Amid her most concerning claims, she says three years ago Muslim students threatened to behead teachers and bullied other students to read the Quran.

"Students were coming into class demanding to fly the Syrian flag, demanding to fly the ISIS flag,” she said.

“When they were told that they couldn't, they would become quite aggressive and intimidation tactics were used against myself and other teachers."

She claims she and her family received death threats, and at least three other teachers made similar complaints, but there is no record of them.

Related Experts question whether deradicalisation programs are working

NSW Education Minister Rob Stokes has confirmed an investigation has been launched, but says there have been no cases at the school of religiously motivated violence.

"The advice I've received is that it relates to one particular incident,” Mr Stokes said.

“There were a number of allegations made. But from what we can ascertain there's not the incidents reports to demonstrate those events.

"The point of concern for me about that incident is that the staff member involved did not feel supported or did not feel taken seriously."

Barrister and Muslim community advocate Bilal Rauf believes "there are some underlying aspects to (Mrs A’s) claims which appear, on the surface, questionable".

"I think there is an element of Punchbowl being unduly targeted,” Mr Rauf told SBS.

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“We haven't seen any former or proper investigation or a report as to the circumstances and what the situation is on the ground."

Security expert from the University of Sydney Hussain Nadim agrees, calling the claims “a little bit far-stretched".

He suggests the word 'radicalisation' is being used incorrectly, and dangerously.

"I think it's very harmful, partly because this is one of the words we use for hardcore terrorists and suicide bombers in Afghanistan, Pakistan and Syria,” he explained to SBS.

“Using the same word for these kids in Australia, kids at the age of 12 or 14, you're pushing them into that corner where there is no return back."

Mr Nadim is urging for caution when an institution or news outlet wants to use the term.

“I think the term has to be changed,” he said.

“You cannot call these young Muslims 'radicals' because you're essentially equating them with someone who's blowing up military forces in Syria."

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Many parents with students currently enrolled at the school have said they have never heard the claims before.

Punchbowl Public is the feeder school to Punchbowl Boys high, which has been at the centre of controversy after its former Principal and his deputy were sacked.

It is believed that was for refusing to implement the state government's community outreach program.

Mrs A was also upset that only halal food was served at some school events.

"Ultimately at the end of the day we're a Christian country, we can put that chair aside and say this is a secular nation,” she said.

“We should not be having one culture or one race dominating the other. I mean it's a secular school, a secular nation, so there shouldn't be any halal in any school whatsoever."

Mr Rauf believes her comments about halal food were also “questionable”.