Slaughter High is a 1986 slasher film written and directed by George Dugdale, Mark Ezra and Peter Litten, and starring Caroline Munro, Simon Scuddamore, Carmine Iannaconne, Donna Yeager, and Sally Cross.

Soon the friends begin dying in a variety of ways – Ted's stomach explodes upon drinking an acid-laced beer, Shirley is melted with acid while taking a bath, Carl is impaled while trying to escape in a car, Susan is killed off-screen, Joe is eviscerated by tractor blades, Stella and Frank are electrocuted while having sex, and Nancy is drowned in a cesspit.

Removing his mask, the jester is revealed as Marty, who revels in his revenge before he hallucinates and gets attacked by the spirits of the people he just slaughtered and passes out.

It was originally filmed as April Fool's Day[2] in late 1984 in London, England, and Virginia Water, Surrey on a budget of $2.1 million.

[1][4] Simon Scuddamore, the actor who portrayed Marty Rantzen, committed suicide by drug overdose on November 21, 1984, shortly after production had ended.

[1] Kevin Thomas of the Los Angeles Times reviewed the film favorably, noting: "In its primitive way, Slaughter High, is one of the better teen revenge horror pictures", adding that the film "benefits greatly from its authentic setting, a big, old derelict Tudor-style school building in a remote area, gets actually quite scary, yet the special effects are of the darkly comic, Grand Guignol variety".

[6] Terry Lawson of the Dayton Daily News was critical of the performances, particularly the English actors' attempts at portraying an American accent, adding that the film "invites comment as much for its oddness as for its awfulness".

[9] Slaughter High was released as April Fool's Day on VHS in Japan by Vestron International and on DVD in the United Kingdom by Arrow Video.

The film was released by Lionsgate on April 15, 2009, on DVD as part of their 'Lost Collection', which contains unrated Vestron full-screen VHS master print.