Other mistake: In a hallway scene with Wally, Miss Canfield, and Mrs. Rayburn, the principal comments that "he's in the 8th grade." If that was correct, that would mean that Wally would be in high school the following year. And with 5 years to follow in the show's tenure, that would mean that Wally wouldn't be in school by the end of the show. Unless, of course, he stayed back 2 years. (00:10:10)
Other mistake: Eddie says his name is Edward Clark Haskell, Jr. In the Voodoo Magic episode, Eddie's father is George.
