Even though "Rapsittie Street" is the accepted spelling, a street sign in one scene uses "Rhapsody Street" instead.
The school slogan is "striving for excelence". Excellence has a double "l".
Most of Ricky's great-grandmother's dialogue is unintelligible, although judging by the other characters' responses to it, we are clearly supposed to be able to understand her throughout the movie. It is presumed that the audio track was damaged and the producers decided to leave it in instead of re-recording it.