This may also apply:
§21-1111 8. Where the victim is at least sixteen (16) years of age and is less than twenty (20) years of age and is a student, or under the legal custody or supervision of any public or private elementary or secondary school, junior high or high school, or public vocational school, and engages in sexual intercourse with a person who is eighteen (18) years of age or older and is an employee of the same school system.
I don’t care about “age of consent”
Especially when a person is in a position of public trust and authority it doesn’t matter if he is 18 she needs punished.