School department I attended used them until I was in middle school. As I recall the teachers made a big deal when we got a photo copyer. That was 1989 as I recall.

I've got a computer that had once been in a medical lab and was used as a database server for the labs records... I know this because the database file was still on the HDD, newest files were from 1998-1999. I have since whiped the HDD clean. but the knowlage it was a lab computer certanly explained why the computer was so clean, even the inside was dust free, looked brand new :)

Ya know there was a book I had as a kid, which my parents may still have, that was a story told in B&W photographs about a trike like that one.

I like how people did their gaffiti on the chalk board... Heck of a lot nicer than using spray paint.