My parents, who are well into their eighties, still teach high school during the week with students who are too emotionally unstable, pregnant, or violent to be in mainstream classrooms. At the end of each school year, for reasons entirely based on their eccentricity [Which is not inherited. Too much. Well....], they always send me a card.
The message this year, in my mother's perfect cursive:
"Dear Rob,
Yesterday was the seniors' last day. They set the school on fire. We finish on June 4th.
Love, Mom and Dad"