LOWER MORELAND, Pa. – A Pennsylvania math teacher faces numerous felony charges for allegedly having sex with a 17-year-old male student at Lower Moreland High School.

Erica Ann Ginnetti, 33, allegedly sent a video of herself stripping, sexy text messages, and other graphic material to a 17-year-old student she later had sex with during a rendezvous in northeast Philadelphia in July, police told NBC.

“According to Montgomery County District Attorney Risa Vetri Ferman, the relationship between Ginnetti and the student began in May when Ginnetti approached the boy at prom and asked him if he would like to work out at her gym. A few days later the boy allegedly emailed Ginnetti and she replied with her cell phone number,” the news site reports.

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“Ferman said that after the two communicated on a daily basis for several months. During that time, investigators say that Ginnetti sent a series of sexually charged messages, including videos of herself undressing and performing sexual acts on herself as well as ‘sexually suggestive’ photos of Ginnetti in her underwear and bikini,” according to NBC.

Eventually, the two met at a coffee shop in Philadelphia in July and went to a nearby park to have sex in the teacher’s car, police told the news site.

An anonymous tipster notified district officials Wednesday about “inappropriate pictures of the minor and teacher doing ‘sexual things.’” School officials later confirmed the reports with the student. Ginnetti, a mother of three children, allegedly admitted to the dirty deeds, NBC reports.

School and police officials refused to discuss the video or alleged sexual activity with NBC, but said the teacher is expected to be fired and the district is working to scrub any trace of the teacher-produced porn from school computers.

Ginnetti taught advanced placement math at Lower Moreland High School, but is currently suspended without pay after she was arraigned Friday on 13 separate charges, including disseminating obscene materials to a minor and sexual assault.

The teacher was arrested and released on a $50,000 unsecured bail, according to NBC.