Nice puzzle you have here :-)
Indeed, getting Goolge to give you THE answer from just 'icon computer 1987' seems to be near impossible. So you've got to help it a bit.
The easiest method probably is getting in contact with the school you attended and get them to put you into contact with one of the teachers or system administrators from that period. If they can't track them down (or are unwilling to do so) the search gets more fuzzy.
Over here in the Netherlands in the early days schools were filled with computers of Dutch origin (like Tulip or Philips) or IBM systems. So, my hint to you is think deep about the computer history of Canada and any names that come up could be used in your search.
If that's still not producing THE answer, the search becomes more fuzzy. It's then time to recall more of the system. Back then it could be handy to have some extra information like the colors on screen and stuff like that.
Happy searching ;-)
