Our class saw it at a cinema in the 1980s
I'm from Vancouver,Canada. I remember going on a class trip to see this movie at a cinema when I was in elementary (primary) school. IMDB says it was released in Dec. '85 but I was in high school at that time, having started in Sept.'85. (I'm 35 now, probably one of the oldest to post on this board).
Being that this film was a Canadian production, perhaps our class saw it as part of a film festival which screens soon-to-be-released films.
Strange, the only thing I remember about it is a scene where a kid goes down a slide/chute in a haunted house.
http://www.imdb.com/mymovies/list?l=9422378