From the Mouth's of Babes: Conversation with the 7 year old neighbor of my aunt and uncle...
Kid: "Guess the name of the principal at my school" (A school in a district that I attended)
Me: "Hmmmm....Ms. Longo?...no...I don't know, so maybe Ms........" (this actually was about 5 minutes of back and forth and guessing)
Kid: "I'll just tell you! It's Dr. Callahan! But she's not a real doctor, that's just her name."
Me: "Actaully, she is a doctor, just not a medical doctor. That means that she went to college for a very long time and so we call her Doctor."
Kid: "No, she's not a doctor, her name is just Dr. Callahan. She's a principal, not a doctor. She just tells teachers what to do."