I got annotations on my writing assignments in red ink often, starting in 5th grade or so, all the way through the last writing class I took in college. Or gree

I got annotations on my writing assignments in red ink often, starting in 5th grade or so, all the way through the last writing class I took in college. Or green ink, in one class where the teacher thought that the color red provoked negative reactions. I thought it was a common way to teach writing.