NEW BRIGHTON, Pa. (AP) — A Pennsylvania high school substitute English teacher has been charged with having sex with two 18-year-old students days before they graduated.

The attorney for 26-year-old Tiffany Leiseth, of Moon Township, didn’t immediately return a call for comment.

Eighteen-year-olds can legally consent to sex in Pennsylvania, but police say she committed a crime because the encounters with the male students occurred when Leiseth still had a teacher-student relationship with them.

New Brighton schools Superintendent Joseph Guarino contacted police after he learned of the incidents. Police determined the students had sex with Leiseth in late May, after she invited them home on separate days.

Leiseth no longer works for the district. She is charged with two felony counts of having sexual contact with a student and one count of providing alcohol to a minor.