"Beeb" is what we used to call the Acorn BBC computers here in the UK. Every school in the '80s had hundreds of them and I had some of my earliest experiences on them
Beeb is also used as slang for the British Broadcasting Corporation.
You're lucky if you had hundreds of them, we had little over a dozen (I'd guess 15 because it's half a standard class size but that is a very rough guess).
I remember we had 2 BBC master computers.
ECONET was awesome. We didn't have that at school but I did a course later on that had a server with a hard disk drive.