Headmastered
Chera Zade, Fanny Mills

Alice hadn't meant for her hands to wander all over her own nubile twenty-year-old body, but she cannot bear to admit to her crime.
Deciding that Alice's infractions are beyond the usual disciplinary methods, the Headmistress sends Alice to the Headmaster's Office to be properly dealt with.
Seven hours alone with the Headmaster? What sort of lessons will Alice learn from the stern and attractive older man?
Expect discipline, and a fairly thorough "education."
Standalone story with a very happy ending.