A killer in a motorcycle helmet is decapitating attractive babes attend a night school class taught by an anthropology professor.It all has to do with some head-hunting rituals from Papua New Guinea.Very enjoyable cop drama/slasher with some elements of giallo.There is a truly sensual shower scene with a a ravishingly beautiful Rachel Ward and three decapitated heads of victims are found in various strange places including an aquarium.The killings are mostly off-screen and there is a bit of sleaze.The melodically creepy piano based score by Brad Fiedel of "Just Before Dawn" is truly effective.If you enjoyed "What Have You Done to Your Daughters" give "Night School" a chance.It truly is one of the slashers that resembles the Italian giallo that inspired the genre in the first place.8 out of 10.