New sex scandal at Brooklyn HS where two teachers were caught naked together

English teacher Erin Sayar, 35, allegedly had an affair with one of her 16-year-old students at James Madison High School.

Horndog High keeps on howling.

A married city teacher at a Brooklyn high school where two of her colleagues carried on a sapphic tryst had a monthlong sex romp on the campus grounds with her 16-year-old student, a new court filing says.

English teacher Erin Sayar, 35, is accused of having sex with 11th-grader Kevin Eng at least eight times last December when she was supposed to be tutoring him. The trysts happened in her SUV and at Brooklyn’s scandalized James Madison High School — which was dubbed “Horndog High” in 2009 when two female teachers were axed after two handymen caught them in a naked embrace in a classroom.

Sayar also plied her pupil with pot she kept in a work file cabinet, according to court documents the teen’s family filed in Brooklyn Supreme Court on Wednesday.

The affair may have continued if not for the teen’s jealous girlfriend, who hacked into his Facebook account and discovered steamy messages between Sayar and him, the filing says.

The girlfriend then snitched to school officials, who informed the student’s mother in January.

Kevin, who’s now 17, initially denied any hanky-panky but eventually ’fessed up to an investigator in late March.

“As parents, we entrust our teachers with the care of our children to cultivate and nurture their foundations, not to exploit their innocence, nor rob them of their childhood,” the family’s lawyer, Bruce Baron, said.

The court filing is a legal notice that the teen’s parents, Maureen and Stephen Eng, plan to sue the city for more than $10 million.

City Education Department spokeswoman Margie Feinberg confirmed they’re investigating the allegations and have removed Sayar from the classroom.

“We are proceeding with charges seeking her termination,” she added.

Sayar lives in a Park Slope apartment with her lawyer husband and their baby daughter. She has worked in city schools for 12 years and earns $78,885 a year. She couldn’t be reached for comment Wednesday.

James Madison has had its share of forbidden affairs.

Spanish teacher Alini Brito and French instructor Cindy Mauro were the teachers busted in a 2009 after-hours rendezvous.

That same year, social studies teacher Allison Musacchio was under investigation for an inappropriate relationship with a male student.

The probe into Musacchio was closed because the teen was of legal age and had left the school.

Citywide, at least seven Education Department employees have been arrested for sex crimes this year, prompting Mayor Bloomberg and Schools Chancellor Dennis Walcott to push for legislation that would allow school districts — not arbitrators — to fire workers involved in sexual misconduct.

By Ben Chapman AND Oren Yaniv / NEW YORK DAILY NEWS