The parents of a male teen student who endured a 9-hour threesome with a pair of high school English teachers have sued the teachers as well as the deep-pocketed local school board.

The irate parents filed the lawsuit months ago but, for reasons that are unclear, the lawsuit became public knowledge just this week, reports The Times-Picayune, a New Orleans newspaper.

The ménage à trois between the teachers, Shelley Dufresne and Rachel Respess, and the unidentified, then-16-year-old male student occurred in the fall of 2014.

Dufresne, a married mother of three, was 32 at the time.

Respess was 23.

Both teachers had been on the faculty at Destrehan High School in Destrehan, La., about 20 miles from New Orleans. The student — a football player, the lawsuit suggests — was a student in one of Dufresne’s English classes. (He was in a class taught by Respess the previous year.)

Dufresne was the instigator of the sex, according to the lawsuit. She allegedly flirted with the student in her class constantly. She once kissed him in her classroom, the suit claims. One day when he was out sick, the suit says, the English teacher texted him. That text led to a relationship which budded into a very intense, star-crossed romance.

Specifically, according to the lawsuit, Dufresne and the student engaged in an impressive torrent of sex and oral sex — over 40 instances in 36 days.

The threesome is what made national headlines, though. And why wouldn’t it? The epic, grueling event impressively lasted from 9 p.m. until 6 a.m. the next morning, according to local police.

St. Charles Parish Sheriff’s deputies say the threesome happened on a Friday night, after a high school football game (which Destrehan won easily, 41-7). It was a special night, too, because it was Dufresne’s birthday.

Respess got involved, the lawsuit claims, after she learned about all the sex going on. Instead of telling school officials, the suit says, she suggested that everybody get together at her apartment after the game.

Dufresne drove the student to Respess’s apartment, according to a local police report obtained by The Times-Picayune. Respess, the younger teacher, and the teen had sex. Meanwhile, Dufresne “began intimately kissing” the younger teacher “in an attempt to arouse all parties involved.” Everybody was fully naked for the romp, police dutifully noted.

The sheriff’s office was tipped off after school officials reported that the unidentified student was bragging to friends about his exploits. (RELATED: TWO Teachers Victimized 16-Year-Male Student With Epic THREESOME)

The parents originally filed their lawsuit on Aug. 11 in Louisiana state court.

Dufresne has admitted to having sex with the student in the home she shared with her husband and her three children, according to police.

The suit claims that Dufresne took to social media to criticize the male student who was already a victim of a two-teacher threesome. These social media comments caused the student “embarrassment and humiliation,” according to the lawsuit.

The lawsuit seeks unspecified damages for emotional distress, mental anguish, humiliation and reputational damage resulting from the multitude of sexual dalliances and the threesome, notes The New Orleans Advocate.

School district officials have refused to comment on the lawsuit.

Dufresne faces unresolved felony criminal charges for carnal knowledge of a juvenile. Respess also faces criminal charges for failing to report of failure to report a felony.

In separate but related criminal charges, Dufresne took a plea deal which included no jail time and no sex offender registration. (RELATED: Louisiana Teacher Accused Of 9-HOUR THREESOME With Teen Gets No Jail Time For OTHER Illicit Sex)

The male teen at the center of the lawsuit — and who was also at the center of the threesome — is now 18 years old.

Both Dufresne and Respess are alumnae of Destrehan High and both graduated from Louisiana State University.

Dufresne’s no-longer-accessible Destrehan High webpage shows she was a 10-year veteran at the school.

Her father is 29th Judicial District Judge Emile St. Pierre.

Respess was an English teacher at Destrehan High for two years.

Lawsuits brought by male students and their parents over teacher-sex escapades are not uncommon.

Earlier this year, for example, the mother of a male teenager who repeatedly had sex with his high school biology teacher sued Los Angeles school district for monetary damages. The teacher at the center of the lawsuit, Michelle Yeh, is currently in prison. The student was 15 at the time of the summer fling. Yeh took the student to Disneyland and to restaurants, the suit claims. She also showered the teen with gifts. The gifts included an Xbox 360, some video games and some athletic shoes.

The teen said the summer affair didn’t turn out to be his idea of an exciting romance.

“Eat, go somewhere, come back, have sex,” the teen told KTLA. “I didn’t feel like I was in a relationship. I felt like I was kind of obligated.” (RELATED: Male Teen Files Lawsuit After He Had Lots Of Sex With Biology Teacher And She Bought Him An Xbox)

In 2014, a former student in the Eagle Mountain-Saginaw school district sued the district because, he claimed, the sexual relationship he had with forensics teacher Rachelle Heenan inflicted such extensive emotional and physical damage that he has been forced to delay entry into the Marine Corps. RELATED: Teen’s Lawsuit Claims Sex Romps With Female Teacher So Mind-Blowing He Can’t Join Marines)

Destrehan High School appears to be a hotbed of teacher-student sexual activity. Earlier this year, sheriff’s deputies arrested Kimberly Naquin, a 26-year-old geography teacher at the school for allegedly having a lengthy sexual affair with a female student. (RELATED: That High School With The Epic Teacher-Student Threesome Now Features Teacher-Student Lesbian Tryst)

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