A lust-crazed Canadian teacher who stalked students in Connecticut for sex and sent her young charges naked selfies has pleaded guilty to second-degree sexual assault.

Allison Marchese, 39, confessed that she flooded two teens with emojis, raunchy sexts and skin shots.

The English teacher is married with two children and her husband taught at the same school in Madison, Conn., the Daily Star reports.

One of the boys testified that the blond beauty summoned him to her classroom where they kissed and then she started fondling his penis. The tarty teacher then locked the door and performed oral sex on the 17-year-old.

If the boy told anyone of their illicit antics, Marchese threatened him, noting "her father was an abusive man who had spent time in jail and had contacts in the Mafia".

The boy told the court that she first seduced him with “weird” sexual missives -- and raunchy snaps over Instagram. One featured the teacher in a thong.

Marchese initially told cops she had sent the raunchy snap to her husband and that the teen got it by accident.

The other student testified that Marchese overwhelmed him with messages starting when he was 14.

She told her prey she "couldn't concentrate during class because he was so good-looking and she could not sleep at night because she was thinking about him.”

He repeatedly asked her to stop harassing him. She replied: "I know when to stop, I know when to move on, but 'I know' is different from 'I can.'"

She pleaded guilty Monday to reduced charges in exchange for a three-year prison term. Marchese also faces deportation, according to the New Haven Register.

Meanwhile, a married British teaching assistant has been jailed two years for performing sex acts on a teen boy during a return flight home from a school trip.

The Daily Mail reports that Jill Meldrum-Jones was “consumed with lust” when it came to the 15-year-old boy.

During a class trip to South Africa, she struck. She started by performing a sex act on a mini-bus.

The duo had other assignations during the trip, stealing away for trysts.

On the flight back to the United Kingdom, she masturbated him three times and performed oral sex on him another three times.

She then performed oral sex on the boy and "encouraged him" to perform acts on her.

Meldrum-Jones pleaded guilty to five charges of sexual activity with a child at Warwick Crown Court.

Her behaviour was described as being out of character. The boy remains traumatized.