sustain his conviction under this Code section, because the evidence failed to show that he had "supervisory authority" over the victim in this case. We disagree.
Viewed in the light most favorable to the verdict, the evidence shows that on at least nine occasions from March 23 to April 22, 2007, Whitehead, a 34-year-old teacher at Bainbridge High School, engaged in sexual relations with J.A.P., a 17-year-old student *519 enrolled at that school. At the time, Whitehead was married and the father of three children, the oldest of whom was a teenaged daughter. The sexual contact between Whitehead and J.A.P. included vaginal, oral, and anal intercourse, and took place at the parking lot of a local church and at J.A.P.'s home during her mother's absence. At trial, Whitehead admittedto having a sexual relationship with J.A.P.
During the time their sexual encounters were taking place, J.A.P. was not enrolled in any classes taught by Whitehead, although she had been in a class taught by him earlier in that academic year, during the fall of 2006. However, during the entire academic year of 2006-2007, J.A.P. was a member of the school's Quiz Bowl team, of which Whitehead was faculty advisor. The Quiz Bowl team participated in academic competitions against teams from other schools in the area. Whitehead supervised the Quiz Bowl team's weekly practices, took the team members to Quiz Bowl tournaments, and was in charge of the school's Quiz Bowl team members while they were at the tournaments.
Whitehead contends that the evidence did not show that he had