poor grammar

"grammar is relevant for all [companies]" (Harvard Business Review)

Grammar signifies more than just a person's ability to remember high school English. I've found that people who make fewer mistakes on a grammar test also make fewer mistakes when they are doing something completely unrelated to writing — like stocking shelves or labeling parts.

I get the same impression from reading students' seminar papers and disserations. If you cannot use a spell checker, you should not be in college.