Student Bodies (1981)
Student Bodies is a 1981 comedy film written and directed by Mickey Rose, with an uncredited Michael Ritchie co-directing. A spoof of slasher horror films such as Halloween, Friday the 13th, and Prom Night., Student Bodies was the first movie to satirize the thriving slasher film genre. A prominent feature of the film is a body count that is superimposed onscreen whenever a death occurs.
More at Wikipedia.