When I was young, I loved playing 'school' in our basement. It was a great place to play in the summer because it was nice and cool in the basement! I had a teacher's desk and a chalkboard (yes, a real chalkboard...not a 'whiteboard'). I created assignments and corrected papers. I would mark a big, scripty "C" on papers indicating it was "correct."
Guess what? Now, I play school 'for real.' Only it isn't nice and cool...it is hot and humid. Yet, I still use that 'scripty C' every now and again.