The
Associate's degree's bastard step child.
Your allegorical left thumb. As in, if you have a
high school diploma, you have a left thumb and no one cares, but if you don't have a high school diploma, then everyone asks why the hell you don't have a left thumb.
Ted: I just got my
high school diploma!
Ben: Great, now you can get that
lawn mowing job!
Ben: Even though I'm making
six figures at this engineering job, I actually never got my high school diploma.
Ted: Omg are you serious? How stupid are you that you can't get a high school diploma!