We couldn't break down the figures for the curriculum but we realised that at least 50% was for memos to all staff - paper that would be looked at probably once and then put in the recycling bin. And that's when we realised that we could have a central intranet in the school containing all that information, divided up for pupils and for staff. That was what we identified would free up the paper.
The quote is from the tech teacher at a Scottish high school that's gone mostly paperless. The article is full of great paperless-driven cost saving techniques.