They are still on paper for our school (or at least were very recently)…at least part of them. Printed out, hand-written, scanned and sent back as a PDF. I think that is because the BS courses are so focused on seeing a kid’s thoughts on paper in their own writing…seeing how they think and articulate language or math in writing. It may sound silly, but math in BS is treated somewhat like a language, because it focuses on process, communication and ensuring that kids have a firm grasp of the components of a well-solved problem.