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)

Leave It To Beaver (1957)
1 other mistake in season 1
Starring: Barbara Billingsley, Hugh Beaumont, Jerry Mathers, Tony Dow
Visible crew/equipment: The shadow of the boom mike is visible in the background when Wally is saying that June looks "ritzy". (00:14:45)
Theodore "Beaver" Cleaver: You know something, Wally? I'd rather do nothin' with you than somethin' with anybody else.
Trivia: Phyllis Coates, who plays the new neighbor Mrs. Donaldson, played Lois Lane in the first season of the Superman TV series in the 1950s.
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