Bruce Roth, who taught maths at Wellington College in Crowthorne, Berkshire, groomed and performed sex acts on three boys at the boarding school and on two others at King's school in Rochester, Kent, where he taught previously, The Guardian reported.
A court in Reading heard that two complaints were made against Roth that he sexually touched one boy and repeatedly abused another, both aged between eight and 10, while working as an assistant housemaster at King's school between 1987 and 1994.
But the accusations were dropped following an internal investigation. The accused left the school and went to Wellington, where he taught until 2010.
Roth denied the 17 charges against him, and accused his alleged victims of conspiring against him because they did not like him as a teacher. He called one of them "sinister".
A jury of six men and six women returned guilty verdicts.
London: A college teacher in Britain has been found guilty of sexually abusing five boys while working as a teacher in private schools, a media report said.
First Published: Wednesday, July 25, 2012, 20:49