I don't suppose it would reveal anything privileged to say, in a general way, that grading papers just happens to remind me of my least favorite writing homophones... encountered at all levels of the educational system as well as from company managers (my bosses) IRL:
"I found this course to be very affective."
"The leaders acted in there own self interests."
"The Soviet's were wrong." (So were "the American's.")
"This was something the U.S. could not except."
Writing again in a general way, I would mention that just happening to encounter such mistakes makes me want to hit myself in the head with a ball peen hammer.
But that has NOTHING to do with these papers.
Uh huh.