But Mark Parsons, headteacher, says all pupils who arrive mid-year at Oliver Goldsmith primary in Camberwell, London, need extra attention. "I've had kids who have hidden in a hole for three months, a girl who lived in the jungle for six months, and a mum who wanted to show me her scars from a machete attack," he said.
"We are brilliant at settling children, but when a new child comes they need more support and it changes the dynamic of a class - teachers find it very, very hard."
For five years, an average of 120 pupils a year joined the 600-strong school mid-year - including 11-year-old Damilola Taylor, who was murdered in 2000.
This year numbers fell to around 96, but Mr Parsons said extra funding could transform their experience.
He said: "It really does need serious funding to have much smaller classes so more support workers can bring the pupils on faster and tackle their bad behaviour."