A "young, attractive and popular" high school teacher engaged in a sexual relationship with a 17-year-old student before asking him to lie about it, her Sydney trial has heard.
The 30-year-old woman, who can't be named for legal reasons, got to know the boy while she was coaching the Catholic school girls' soccer team and he was the captain of the boys' team in 2005, the first day of her District Court trial was told on Monday.
She has pleaded not guilty to three counts of having sexual intercourse with a person who was under her care.
On three Wednesday afternoons in 2005, the pair drove to a Sydney soccer ground and engaged in sexual acts in her car, crown prosecutor Ken McKay said in his opening address.
"It's not suggested (the sexual acts) were without his consent," Mr McKay said.
"He was happy to go along with it."
But he said this was no defence for the woman, because she was a teacher at the school he attended.
The jury was told the sexual intercourse charges were based on the allegation the boy digitally penetrated the teacher on each occasion.
The Crown alleges that when the Catholic Education Office investigated the allegations in 2008, the teacher rang the boy and asked him to lie, which he did.
Charges were eventually laid last year following a police investigation.
Defence barrister Phillip Boulten, SC, said the teacher, who was aged 22 at the time, never engaged in a sexual relationship with the boy and was the subject of false claims.
"She was the subject of a lot of attention at school because she was young, attractive and popular," Mr Boulten said.
He said the boy was making "empty and false claims" when he told people he was in a relationship with the PE teacher.
"There will be two witnesses in this case who will shed light on whether it did or it didn't happen," Mr Boulten said.
They would be the teacher and the alleged victim, he added.
The trial continues before Judge Leonie Flannery.
