When I worked at a small rural hospital, I frequently was called on to proof letters going out from the head administrator. In fact, I had to correct an VIP in a staff meeting about some grammatical errors in a brochure going out. She was not pleased, and brought a dictionary to "prove" she was right. (I won the disagreement, though). I was an English teacher for 38 years and my background was solid from years ago. Our newspaper is now fraught with errors every day. The most egregious errors are clipped and sent to the offending writer.