Neil Albert Futcher, 69, is accused of sexually abusing six boys as young as 11 between 1974 and the early 1980s when he was a teacher at Trinity, and later in his role as a swimming coach.
He has pleaded not guilty to all 22 offences, including eight counts of buggery and 12 counts of indecent assault on a male.
In his opening address, crown prosecutor Giles Tabuteau told the District Court jury Futcher organised holiday trips during which he allegedly fondled and raped boys, and that incidents of abuse also allegedly occurred at his Drummoyne apartment.
