A former sports teacher was jailed for sexual offenses against students.
George Carroll had previously admitted nine charges against three students at Cartmel School and today's Settlebeck School in Sedbergh between 1963 and 1972.
He was indicted as part of Operation Tweed, an investigation for recent abuses at Cumbria schools.
85-year-old Carroll, from Queens Road, Bournemouth, was detained at Preston Crown Court for two years.
The court was told that Carroll had committed the crimes when the boys blew up soccer balls in storerooms.
In his interview with the police, he said he could not fully remember the incidents, but accepted that he had behaved sexually inappropriately with male students during his teaching career.
Det Insp Doug Marshall of Cumbria Constabulary said: "The victims in this case had to live with what they have learned from Carroll for decades.
"However, I hope the sight of the former physical education teacher who performed what he did and was brought to justice for his crimes all these years has brought comfort to them."