How bad is it? It's a Troma slasher film, so not good at all.
Should you see it? No.
It looks like Lloyd Kaufman's Troma bought this film and released it, rather than making it. It's a haunted house movie and a slasher film, but fails at both. Six girls and their teacher go to a mansion left to their school by a dead millionaire. Then they get killed, one by one. The camera tends to pan away from the gore, and after a decent start, the film stalls for 40 minutes of bad dialog and then drags with padded footage, with occasional nudity and a contrived ending.