The Monster is never seen in a full shot as the entire costume was never finished. They only had bits and pieces that were used as a puppet (hands, face, legs, etc).
Brad Dunker became one of the lead 'Cretins' because he was one of the few people in the cast who was able to ride a motorcycle. Before that, he was a member of the crew and had a cameo as a student with sunglasses in the party scene.
Lauren Heather McMahon's role as Taru was originally a lot bigger, but due to her having a car accident, her character was replaced by others in the script. Her scene in the film is also the only one solely directed by Richard W. Haines.
The original title for the film was simply 'Nuke 'Em High.' It was later changed in hopes of people mistaking it for Class of 1984 (1982).
When Dewey lands on the pavement in the opening scene the first man to walk up to him is a shocked, bearded man, played by Troma co-founder and producer Michael Herz in his only on-screen performance ever.