1984 - Microsphere (UK)
by David Reidy and Keith Warrington
Probably the most original game ever made for the speccy followed by Trashman, in my perspective. Great plot in a very well thought out game. You could either just fool around, teasing teachers and collegues or actually play the game. Both were great fun.
The autors later made the brilliant sequel "Back to Skool" as you all know, and later popped out another great game within the genre, called "Contact Sam Cruise", which was also brilliant.
Skool Daze is by far one of the most iconic games of the Spectrum era.