A 13-year-old was excluded from school and accused of ‘assault’ after she threw a Haribo sweet at a teacher during a charity fun day to lob sponges at them, her mum says.

Sue Freeman, 52, says Katie, 13, was accused of “assaulting an adult” when she chucked the gummy bear at her deputy head.

Students had been allowed to throw wet sponges at teachers to raise cash for Children in Need on November 16.

But year 9 Katie threw a single Haribo gummy bear at the deputy-head.

Sue said he wasn’t injured but staff didn’t see the funny side, putting her 13-year-old daughter into isolation before excluding her and kicking her off a school ski trip.

Mum-of-two Sue, 52, of nearby Newbold Verdon, Leicestershire, said: “I’m so angry. I want people to know how petty our education system has got.”

The principal of Market Bosworth School wrote to Katie’s parents saying was being excluded for “assaulting an adult”, which will be kept on her permanent record.

Sue said Katie has now been told she will now not be allowed to attend an £850 school ski trip to Italy which the family had already paid for.

“She’s absolutely gutted abut it,” Sue said. “The school have said they’ll get the money back to us but the family have already spent hundreds of pounds on ski gear for her – it was going to be a Christmas present.”

The gummy bear reportedly hit the deputy head in the chest during the fun charity event sparking an investigation into which child threw it.

Sue says Katie was put into isolation for the Friday and the following Monday, excluded Tuesday and she has to attend weekly meetings about her ‘behaviour and attitude’.

In a letter home to Katie’s parents school principal Stuart Wilson said she was being suspended for “physical assault against an adult”.

“The decision to exclude Katie has not been taken lightly,” said the letter.

Sue believes school has completely over-reacted, she said: “Katie has never had a bad report. I’ve never been called in before because of her behaviour. “I’m absolutely disgusted.” A spokesperson for the school said they did not comment on individual cases.