I think I would like to know as much as you would where that figure of 600 million copies comes from, quite frankly. I'm not sure where it came from. I'm not sure if it's K to 12 only or if it includes post-secondary copies as well. If there are 600 million copies per year, and if there are five million students, that's 120 copies per student per year.
That makes how much per month? In 10 months, that makes six copies per student per month. I'm getting that wrong. My math is not my strong suit. Anyway, it makes for a low enough number that to me this does not demonstrate industrial copying, if you will, or widespread copying. It means that teachers are copying short excerpts, like the Supreme Court said they were.