Gave the computer studies teacher a nervous breakdown - quite literally I think, he never came back after going off sick - by messing with the network, turned out I knew far more about the Acorn / BBC Econet system than he did, we used to send him threatening messages (with the identity of the sending terminal displaying in black on a black background
) locked him out of the Winchester HD server (a whopping 20MB and the size of a big suitcase) Made the computers say in tandem “Mr ***** is a *******” - what sounded bizarre was the BBC computers used a speech synthesiser that had the voice of Kenneth Kendal who was a well known BBC newsreader at the time.
Used the computer club as a software piracy empire, anything that wasn’t nailed down in the computer lab disappeared, the list went on.
Eventually the school updated to Research Machines (which were awful) and the fun stopped but a friend of mine went back after school and took all the old BBC computers out of the skip and sold the lot via Micro Mart, made well over £1k which in the late 80’s was big money!
I got suspended for blowing up part of my schools incinerator.
Set off a few bird scarers which I had liberated from a local farm (imagine very very very loud bangers) during the school nativity.
We rolled a teachers Robin Reliant 3 wheeler on to its roof in the car park.
Put cling film over the pans in the girls toilets just before break.
And those are the things I’ll admit to.
There was more, much more!