A Melbourne school teacher has been jailed after he was found with a "staggering" amount of child pornography.
Adrian Michael Fennessy, 53, downloaded more than 16,000 images, traded pornography online and used different email accounts to access chat rooms.
Fennessy was a teacher Santa Maria College, a Catholic girls school in north-east Melbourne, and admitted that he used the pornography to "get off basically".
Magistrate Peter Reardon said the well-regarded teacher never had an adult relationship in his life.
The court heard that although he had collected a prolific amount of pornography, only two per cent of the content would be considered in the worst category.
Prosecutor Luisa Dipietrantonio said Fennessy had created a 16-year-old alias by the name of 'Mary' which he lived out his fantasies through her.
Fennessy accessed numerous chat rooms using the alias.
In the sentencing remarks, Mr Reardon noted that Fennessy had rung the principal of the school upon his arrest in March 2011 because he was worried about the school's reputation.
"You were a good teacher but you led a separate life," Mr Reardon told him.
Fennessy's sentence was reduced because of his previous good character, lack of prior convictions, co-operation with police and he was remorseful.
He was jailed for 12 months with a minimum term of four months.
He will also be suspended from teaching for four years.
Source: The Age.