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)
Audio problem: In the early classroom scene, after Judy reads the grammar exercise, Miss Canfield calls on Whitey Whitney, who has raised his hand. When she does, she seems to say, "Harold." (00:01:20)
