A man has been found guilty of sex offences on children as young as three years old.
Alexander Korodi, 65, from Plumstead, London attacked one of his victims at his previous home in South Luffenham, Leicestershire and in his builders van.
Korodi was a school bursar but he has now been told he will face years behind bars.
His victims and their families heard the guilty verdict at Snaresbrook Crown Court.
Korodi started abusing his first victim when she was seven years old after dating her mother.
He then went on to another victim whom he repeatedly raped between the ages of 11 and 16.
His final victim was only three years old when he began to abuse her in 1980.
Sentence will be passed on 8 August.