A female teacher charged after having sex with a student of a North Queensland school where she was working at the time has been acquitted of unlawful carnal knowledge.

Key points: Sarah Guazzo told the 16-year-old she was having marital problems

Sarah Guazzo told the 16-year-old she was having marital problems The court heard the student made the first move after being manipulated into it

The court heard the student made the first move after being manipulated into it The jury acquitted Ms Guazzo after deliberating for 15 minutes

The District Court in Townsville heard Sarah Joy Guazzo seduced the then-16-year-old student, drove him to secluded locations, gave him alcohol and had sex with him on several occasions in 2016.

Ms Guazzo pleaded not guilty to three counts of procuring a young person for carnal knowledge.

Under the Queensland Criminal Code, such an offence is committed when someone "procures a person who is not an adult or is a person with an impairment of the mind to engage in carnal knowledge".

The boy, who was a student at the school but was not in any of Ms Guazzo's classes, was the only witness to give evidence during the two-day trial.

During proceedings, it was revealed the inappropriate relationship between the pair started after they had a conversation during a bomb hoax at the school on March 10, 2016.

The court heard Ms Guazzo, 29, asked him: "Have you ever thought of having sex with a teacher?"

A string of flirty messages allegedly followed, including one in which she said to the student: "Do ya wanna do something fun?"

The court heard during their first encounter at Crystal Creek, crown prosecutor Dominique Orr said Ms Guazzo told the teenage student she was having problems with her marriage.

"She told [the student] how she and her husband hadn't slept together in a while — she said he wasn't giving it to her," Ms Orr said.

Ms Orr said the pair were worlds apart in life experience and that the student made the first move in initiating sex because the teacher had manipulated him into it.

"[He] said he hoped it would happen — this aspect illustrates prime ideal target and clearly the defendant knew this — an easy catch for the sexual gratification that she sought.

"This isn't a coming-of-age moment that he gets to have sex with a teacher."

The court heard Ms Guazzo drove the teenager, who was 12 years her junior, to Halifax and Fox Creek Falls on two other occasions for sex and told him not to tell anyone, as it could get her sacked.

"This was all about sex for the defendant — sex that the defendant wanted and [the student] was more than willing to give," Ms Orr said.

Ms Guazzo (spotted shirt) leaving court after a jury found her not guilty. ( ABC News: Sally Rafferty )

Defence lawyer Stephen Zillman urged the jury to consider evidence provided by the student under questioning.

"You were asked: 'So the truth is you didn't feel you were taken advantage of?' To which you answered: 'Not at all, not at all'," Mr Zillman said.

In closing, Mr Zillman said the student was aware of his actions and had treated the defendant like a piece of meat.

"You might think he was practiced in terms of love-making, he knew what he was doing," he said.

"You might have got the impression that he was not virginal — quite an experienced practitioner in the art of love-making."

Judge Gregory Lynham told the jury the case was unique as it was the first he had presided over where no physical witness had been called, with the only evidence given via video link.

It took the jury just 15 minutes to reach their not guilty verdict.