While I would not really call this a classic, it is a fine piece of trashy pulp horror, and just OTT enough to make it stand out from the pack of cheesy 80s horror. The titular schoolhouse is Victory elementary, located in a small, upstate NY town. Our main leads are Virgil, the principal of the place, and his son Ned, a fifth grader who attends the school. Duigon kicks this off with a prologue, where the shaman of the Spotted Turtle tribe witnesses a meteor slam into a valley; soon the place has a bad rep among the locals.
Flash forward to the 1980s and the valley is now filled with Tianoga, a small town. Virgil grew up in Tianoga, and even went to school at Victory as a kid; he got his degree and started teaching there before he became the principal. It seems the school will be closing down after this school year and the 'sentience' at the school knows this (not a spoiler, as Duigon introduces the POV of the sentience right off the bat). Hence, rather than slowly reel in prey, it needs to up its game to take advantage of the time left.
Right off the bat, Duigon introduces lots of strangeness; the staff acting strangely (after being injected up their noses by something that came out of the pipes. Obviously, the place is haunted, or is it something even worse. While the narrative is largely from Ned's POV, Duigon often shifts to various staff members, and it is a lot of fun to watch them either self-destruct or take matters into their own hands...
I have to thank Jack Tripper for putting this one on my radar. Lots of fun, plenty of foo, and surprisingly well written. If you are into trashy 80s horror, give it a whirl. 4 crazy stars!!!