A head teacher cancelled the last day of term for a whole year over fears pupils were going to carry out a terrorism prank on school grounds.

As revealed last Thursday, parents were outraged at the head teacher’s decision to cancel the last day of term for Year 11 pupils over fears the "ISIS fireworks prank" would compromise safety for both students and staff.

Rumours circulating online and within Chatham Grammar School for Girls suggest a group of some Year 11 pupils planned to dress up as militants and set off fireworks inside the school.

Head teacher Christine Probin took the decision to refuse all GCSE pupils entrance into the school, on what would have been their chance to say goodbye to staff and friends.

Demanding answers, parents waited outside the school for more than three hours to speak to the head, but according to them, Mrs Probin stayed in her office.

In the end, to bring the situation under control, the police were called in.

A number of pupils have taken to social media to deny any such plans.

However, commenting on the story online one parent, LadyKent87, wrote: “These young girls are supposed to be educated and I can totally see why the school decided to stop the pupils coming into the school for their last day.

“Just think, if your daughter went to this school and accidentally got hit by a firework, you would be asking the school why measures were not put in place to prevent this happening.”

However, Debbie Richies, disagrees, her daughter is a Year 11 pupil at the school in Rainham Road, and said her daughter was forcibly expelled from the school on Thursday afternoon when the prank rumours came to light and was excluded on Friday altogether.

Mrs Richies said: "I had to leave her at home in tears and missing out on saying goodbye to her classmates and teaching staff.

"I find it incomprehensible that a whole year group can be punished on the grounds of rumours circulating a school – whether founded or unfounded.

"It is also unacceptable to have only informed the parents after the event – the girls were left distraught out on the main road and not allowed back on to school premises, surely a major failing in the schools duty of care.

"I have asked both my local councillors and MP to investigate the matter, and have contacted Mrs Probin to ask for an explanation but with no reply as yet.

"It appears she cannot cope with the consequences of her actions and has gone into hiding."