Continuity mistake: When the four girls are back at the graveyard for the third time trying to talk to Dear Johnny and put him back in his grave, they see the lights and the headstone float out in front of them, with nothing holding onto it. Then in the next shot there are chains around it, from the tractor that is holding it in mid air.
Continuity mistake: When the girls are at the diner, talking about how the waitress Wiladene is "off", Teeny has one hand on her Cosmo and one holding the pencil marking the answers, but in the next shot when Teeny says "What do you expect? She's a witch" her hand is just touching the edge of the table.
Continuity mistake: When the girls are riding their bikes to the library, Chrissy's hair is up in pig-tails with pink bows. In the next scene when the go under the train bridge, her hair is down without any bows. Then when they come under the bridge, Chrissy's hair is pulled back into the two pig-tails with bows. (00:28:25)
Continuity mistake: In the beginning of the movie Chrissy is curling her hair, her hair remains tightly curled while in the house. When she goes out to greet the other girls her hair looks brushed out, definitely not tight curls. Then, when they all go inside, her hair is back to tight curls.
Continuity mistake: When Roberta falls over on the road after missing her dive onto Scott on his bike, a man ahead with a briefcase hurries across the road before one of the other Wormers can cycle into him, and another one of the Wormers cycles ahead of him. After Roberta vows revenge on the Wormers, and when Scott yells back at her, the man is seen crossing the road again at a steady pace with all four of the Wormers coming before him.