I wished I had a chance to take Gene Woolsey's class. Woolsey was a major personality in Operations Research, and from reading a set of remembrances in ORMS Today (June 2015), I learned that he was also an amazing teacher. And no one in his class made spelling errors! How cool is that. Well, I don't know if no one ever made a spelling error but I bet that the frequency of typos was much lower than usual. The INFORMS obituary is here.
The ORMS Today article contains an amusing passage about his Statistical Consulting class, starting with:
The class had a dress code: a suit or equivalent attire for presenting a project to the CEO of an organization or a three-star general (or higher).
and my favorite (my bolding):
To emphasize the importance of presenting your work professionally, each spelling or grammatical error dropped your assignment mark by one letter grade.
In case the reader does not feel the gravity of the situation, the author, a former student, elaborates:
It really drove the lesson home when you saw an "A" on your paper scratched out and replaced with a "C" because of two spelling errors.
Next time I mark a paper that contains multiple typos and errors, I might need to pull a Woolsey!