This was in the 1980's. We're talking 5 1/4" floppies, no internet, 64MB RAM. I had to review my students' work as dead-tree submissions or completed circuits or whatever.
(I certainly wasn't going to take digital submissions from them; that would mean floppy disks, and I regarded any disk that had been touched by any student as if it were infected with plague, because it almost certainly was. All the school systems were always infected).
Actually not so modern, my college was auto-grading 20 years ago.