Kendall,
I agree. It should expected an instructor would properly ready themselves for a class (every class) without having to be prompted to do so. Students expect us to be prepared, even if they are not. It may be true that some students may pick up the habit of preparedness. But even if they don't, our responsibility is to be ready and organized for class, arriving early, gathering resources, and available for the students as they arrive.
Barry Westling