Because they don't take their bottles out to play with them. They don't need the loo if they have been at break. Who needs to go more than once every couple of hours.
If work is incomplete they stay at break to do it.
They’re children, it doesn’t matter if they need to go more than once every couple of hours, especially if you are letting them drink in class.
Makes no sense to me;
Don’t let them go to the toilet as they can go at break
Let them go get a drink during lesson
Don’t take a drink bottle out with them to get at break
Has to stay behind at break to finish work which then takes away the time they are allowed to go to the toilet
Is it school policy they don’t go to the toilet during lesson, or is this you saying?
Personally I think you’ve had it in the neck from a parent or something and now looking for justification. Though why you have come on to a Liverpool Football Club forum to do that I’m not quite sure.