A former Georgia teacher has been arrested for having sex with one of her high school students.

Authorities say 48-yera-old Julee Sams Impara met a 17-year-old boy last year while she was his teacher at Mill Creek High School.

The boy’s mother found several inappropriate messages on her son’s phone and confronted her about it. She didn’t deny it.

The boy tells police that they began to have sexual contact outside of school, and he said she even picked him up at his home at least one time.

She was arrested Tuesday and charged with sexual assault.

She submitted her resignation on December 9, 2015, a day after parents had notified the school about the allegations.

Gwinnett Police say the sexual assault charge was warranted due to being a teacher.