Their educations ended with high school - my father going to work as a clerk and then salesman in a company dealing in printing and stationary, and my mother working as a secretary and then bookkeeper in a firm of wool merchants.
I like to allow young readers to keep writing in their heads after they've finished reading. Not to leave the ending too open, but enough so they can imagine: What does this mean? My young adult books usually end in a far more obscure way.