Factual error: Two of the albums sent to Larry by the Columbia Record Club are Santana's "Abraxas" and Creedence Clearwater Revival's "Cosmos Factory". The film takes place in 1967. Both albums were released in 1970.
Factual error: Although the film is set in 1967, the school buses have folding stop signs on the side, which weren't available until the late 70s.