A mum claims that her son was told by a teacher at school that he was only allowed one bottle of squash with him - on the hottest day of the year.
Bryony Cappleman, 34, sent Jacob, seven, off to class on Monday 18 with three 500ml bottles of Robinson's squash, and did so because he is not keen on water.
But, when she went to pick Jacob up, he revealed he had been told off by teachers - and was told he could only consume ONE bottle of juice that day.
The mum was left shocked, and claims that this left him dehydrated on one of the hottest days of the year - where temperatures hit highs of 37C in most parts of the UK.
Immediately, Bryony messaged Wheatcroft Community Primary School to complain, and find out why and what had happened.
It is understood that the staff replied reiterating their health rules, which apparently state that only one bottle of squash is allowed a day, at certain times.
However, under the rules, water can be drunk at all times.
Fuming at this, the mum-of-two said: "I just can't get my head round it to be honest.
"They've compromised on uniform policy because of the weather, so why can't they compromise on this?"
When approached for comment, the school said Jacob had been seen filling up his water bottle and "was seen drinking from that bottle throughout the rest of the day by staff in the classroom".
But Bryony is adamant, claiming he "won't drink water".
The nurse says, "Jacob won't drink water, and to get round it, I make him a very weak, sugar free squash to take with him to school."
She added this usually does not conflict with the school rules, which she says state students are allowed to drink one juice or squash bottle with their lunch each day.
But due to the extreme weather this week, Bryony says she decided this wouldn't be enough for Jacob and decided on packing him three juices to take with him to the primary school in Scarborough, North Yorks instead.
When Jacob returned, the 34-year-old mum says she was left stunned that the rules had not changed despite the heat
The mum claims that Jacob did not drink anywhere near enough the amount of water he should have.
Bryony says she has complained to the school but has been unsatisfied with their response, adding: "And, it was roasting yesterday, so of course he needed more than just the one bottle.
"But to drink more than one goes against the school's 'health' policy and he was literally banned from drinking any more.
"How can a school claim to be upholding healthy standards when my son was dehydrated as a result of their rules - it's a disgrace.
"I'm a nurse and the amount of global admissions hospitals get from dehydrated children and elderly people during this kind of weather is frightening."
Arguing her right to have sent Jacob with the drink, she added: "I would understand if it was Red Bull or Monster Energy, but it's not - it's a family drink.
"I've kept him home from school today because I'd rather have him somewhere where I know he's drinking during this hot weather - it's really frustrating."
A spokesperson for Wheatcroft Community Primary School said: "The pupil in question brought three bottles of juice into school.
"During the morning he drank one 500ml bottle whilst in class. He requested a second bottle and a member of staff suggested he refilled his bottle with water and save his second bottle for packed lunch.
"The pupil filled up his water bottle with water and was seen drinking from that bottle throughout the rest of the day by staff in the classroom.
"All our children have access to cold water to drink or fill up their water bottles with throughout the day.
"All pupils are encouraged to bring their own water bottles and as a healthy school we encourage children to drink water in class, at playtimes and PE lessons to stay hydrated."
