Depraved Brooklyn Teacher Charged With Sexually Abusing 7 Students For Good Grades

A nerdy teacher at prestigious Brooklyn Tech High School had sexual relationships with at least seven female students — and rewarded some of them with perfect grades, authorities said Tuesday.

Teacher Sean Shaynak “would routinely give [one teen] 100s in his class even though she turned in work with no answers,” Brooklyn prosecutor Joseph Mancino said at the suspect’s arraignment.

The bespectacled, bow-tied professor, 44, “groomed’’ his young victims for sex while teaching math and science at the famed school, which counts Mayor Bill de Blasio’s son, Dante, among its students, authorities said.

Prosecutors presented a long list of disturbing behavior by Shaynak.

He forced himself on the girl he had given perfect grades to when she refused to engage in a particularly graphic sex act; he had bestiality porn on his computer; and he took another female student on a “terror ride” from Queens to Brooklyn that ended with her becoming so scared, she ran and hid in some bushes while he “screamed and banged on the car,” Mancino said in court Tuesday.

“We did multiple searches and found on his computer [videos of sex acts between] humans and dogs to humans and horses,” Mancino said.

A licensed pilot, Shaynak also ran the school’s Aerospace Club — where he was known to cozy up to the prettiest students.

“He’d always have students come visit him, kids that were not in the club, mostly very good-looking girls, the best-looking girls in our school,” said Alan Chambers, 16, a junior in the club.

Shaynak, who lives in Flatbush, was busted in August after allegedly sending a “selfie” of his penis to a female student.

Once investigators pored through his computers and phones, they discovered evidence — thousands of texts, photos and videos — that he had sexual relationships with girls ages 13 to 19 starting in 2011, authorities said.

“The defendant clearly looked to groom these students,” Mancino said as Shaynak was held on $1 million bail.

“Blondes, brunettes, Asians, Hispanics, Middle Eastern — he was an equal-opportunity predator,” the source said.

Law enforcement sources said Shaynak purposely didn’t have sex with girls under 17 to avoid statutory-rape charges.

Mancino described one perverted four-month relationship Shaynak had with a student.

“He brought her to a sex club out of state, where he performed sex acts on other people and other people performed sex acts on him,” Mancino said.

Shaynak — who isn’t married but has a 9-year-old daughter — also took a 15-year-old girl to a nude beach in New Jersey, plied her with “Jack Daniel’s and tequila to the point where she passed out” at his house, traded over 10,000 text messages with her and tried to talk her into having a lesbian relationship with another underage student, Mancino said.

He also had consensual sex with two students age 18 and 19, and touched and kissed other underage girls and sent photos of his genitalia to four students, including two minors, prosecutors said.

The suspect — dressed in a suit and necktie instead of the goofy bow ties he favored in school — was dripping sweat as he sat in handcuffs at court.

His lawyer, Kim Summers, tried to explain away the 10,000 text messages — by blaming the girl.

“One of them was routinely contacting him, and that might explain the voluminous text messages,” Summers said.

Shaynak was charged with kidnapping, unlawful imprisonment, criminal sexual act, forcible touching and sexual abuse. He pleaded not guilty.

Shaynak has been in a “rubber room” — a Department of Education status removing him from the classroom with pay — since his first bust. He makes about $52,000 a year.

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