In this episode, the walls in Spinelli's living room are pink. For the rest of the series, they are tan.
When Flo told Miss Grotke that Spinelli just stop "wetting the bed" this year, Flo's necklace briefly disappears.
In the beginning of the episode, Gus folds a paper and inserts in his shirt pocket. Later in the episode, his shirt has no pocket.
During the scene at the cafeteria, T.J. is initially sitting in front of Gus. Once a boy comes to tell that he has heard that Spinelli's parents would be on the space shuttle, T.J. is sitting in front of Gretchen.
While Mikey is seen sitting on the cheesebox, the box looks smaller than him, being much smaller than in other episodes.