A now-former Georgia teacher at South Gwinnett High School has been charged with sexual assault.

53-year-old Therese Gunn is the fourth teacher in the county to be arrested this school year on sexual misconduct charges. She not only is accused of having an ongoing relationship with a 17-year-old male student, but is also alleged to have smoked marijuana with multiple students who she’d inviting to her home.

She purportedly began her forbidden affair back in March. The sexual activity is said to have occurred at the school, at her home, and at a park.

The investigation began in late April after the male student’s mother reported the relationship to authorities. Ms. Gunn resigned the day before. She turned herself in Friday evening and was released Saturday on a $21,700 bond.