Spikeyball: My daughter went through a stage of reaccuring constipation, when the overflow happened I put her in a pull up aged 7 for school.
The teachers were awear of this and a care plan was put in place that we all agreed on.
As overflow is constant but slow releasing there will always be marks inside the pull up, so it was agreed she would have a bag of changing equipment in the staff toilets where she could change herself and clean up every break and lunch time.
She was quite rightly uncomfy and embarrassed during this period of time (all in all about 3 months) but the only alternative was to stay off school, which would of had a much higher chance of damage to her education.
Not once did I ever think a teacher or a TA should be dealing with this.
(They couldn't)
For those coming into reception still in nappies, there really is not the facilities in class to deal with this, if a 1:1 TA is assigned due to SEN great, but it would involve taking them out of the class to somewhere more equipped (costing time) that's ok as 11:TA is funded for this
However a child coming in nappies with no SEN, no extra funding for 1:1, no obvious reasons, then I have known schools inform parents they will actually have to come in and change them.
strangely for some it didn't take long for them to be toilet trained.