One in four children are due to start school in September without being toilet trained, a charity has said.
A report by early years charity Kindred found pupils are losing, on average, a third of their learning time each day due to teachers diverting away from teaching and towards supporting children who are not school-ready.
Bristol charity ERIC - the children's bladder and bowel organisation - has now set up an "emergency intervention" campaign for those starting school next month.
ERIC CEO Juliette Rayner said that, while the problem had been a "growing issue" recently, "this year seems to be particularly bad".
What do they mean by school? What age are these children?
Where I'm from, the typical age to potty train is 2-4 years, so 25% at age 6-7 sounds very high.