It's wrong to engage in a relationship with your student.
Professor Drake has asked Patricia to stay after class with him to discuss her grades.
Professor Drake wants to help Patricia raise her grade.
Professor Drake offers Patricia an extra-credit assignment that would get her grade to an A.
Professor Drake offers to give Patricia an A- in exchange for dating him through the rest of the semester.
Patricia passes the class with an A, leading Patricia to view Professor Drake fondly.
Patricia agrees, but their affair is discovered by the Dean leading to Professor Drake's termination.