You should be respectful toward your teachers.
Jack just got his essay back from his teacher, and he got a very bad grade on it.
Jack wants to vent his anger.
Jack holds his tongue in class and vents his anger to his friend who has the same teacher.
Jack yells at his teacher and gets really angry with her over the grade.
Jack's reputation at the school is preserved, and he vents in a healthy way.
The teacher feels disrespected and reports Jack to the dean for disciplinary action.