Other mistake: When we first see the gang inside the Ashley's clubhouse, in the shot after T.J. says, "Ladies, you have a deal," there is a big white line at the bottom of the screen behind the characters; the background seems to have been shifted up slightly in this shot.
Other mistake: When Miss Finster walks into Principal Prickly's office, her waistband is mistakenly coloured yellow, but when she starts to leave his office, it is white again as it should be.
Other mistake: When T.J. tells the gang that he is sure that the treasure will make them all millionaires, Gretchen's sash around her dress is mistakenly coloured blue, and in the next shot, it is pink again as it should be.
Continuity mistake: When T.J. runs out of the school with the history book, the book is red, but it changes to blue in the next shot, then back to red.
Other mistake: When T.J. discovers the directions to the treasure inside the old history book, Gretchen's left shoulder is going over T.J.'s desk, and there is a big white line going through the bottom of the desk. It seems as if T.J.'s desk has been shifted up slightly in this shot.
Other mistake: When Miss Grotke gets an old copy of the history book for T.J, she opens the cabinet and takes the book out. When she closes the cabinet, the knob moves higher on the cabinet door mid-shot.
Continuity mistake: When Miss Grotke gives T.J. an old copy of the history book, there are two kids sitting in the desks behind T.J., but they vanish two shots later.
Continuity mistake: At the start, the books that Miss Grotke gives to the class are red, but they all change to blue in the next shot.
Continuity mistake: When Gretchen's mother first sees Gretchen doing homework, the paper in front of Gretchen has three lines on it. In the next shot, there is only one line on it; then the paper is completely blank in the following shot. Then, when Gretchen falls asleep on her desk, the paper has three lines on it again, and Gretchen's pencil has disappeared from her hand.
Continuity mistake: When Spinelli arrives at school at the end, she holds her purse in her hand, but it disappears two shots later. It reappears when the gang starts to play tag.
Other mistake: When Spinelli sees the man walking multiple dogs, as she asks him how much he gets paid to do it, the poodle's chest fur becomes the same colour as the background twice in two frames. The same thing happens with one of the Dalmatian's legs.
Continuity mistake: When Spinelli and Pat Patterson sit on the bus bench, the text on the bench that says "Just Buy It" has a period at the end, but the period is missing in all the following shots.
Continuity mistake: When Pat Patterson tells Spinelli that they should have a seat on the bus bench, the bench is missing the word "Gumoflex" and the black gum logo that it had in a previous shot. They both reappear when Spinelli and Pat sit on the bench.
Continuity mistake: When Gus is hiding behind the trees at school, no one is standing behind the fence, but in the next shot, the gang suddenly appears behind it.
Other mistake: When Gus and T.J. are talking on the bench, as Gus says, "No, at least not yet," his watch is missing from his wrist; then it appears mid-shot.
Continuity mistake: When the gang sees Gus standing next to the tree, T.J. has his backpack on, but when the cops arrive, his backpack vanishes. The straps also change from grey to blue.
Bonky Fever - S4-E30
Other mistake: When T.J. goes to Miss Finster to tell her about Mikey's Bonky stuff, Miss Finster's waistband is yellow when it's supposed to be white. Then, when she takes the bag from T.J., it has changed to pink, then turns white and back to pink mid-shot. Her collar is also yellow in this shot, then turns white and back to yellow mid-shot as well.
Bonky Fever - S4-E30
Continuity mistake: When the gang arrives at Mikey's house with his birthday gifts, Gus wears a red bow tie. Then, when the gang walks up to the door, Gus's bow tie has changed to the same color as his shirt, then goes back to red in the next shot.
Bonky Fever - S4-E30
Continuity mistake: When the gang arrives at Mikey's house with his birthday gifts, note the colours of the gifts that Gretchen and Gus are holding. When the gang looks at Spinelli's gift, Gretchen and Gus's gifts have swapped colours, then they swap back in the next shot.
Bonky Fever - S4-E30
Continuity mistake: In the cafeteria, Mikey asks the lunch lady for more pudding for Bonky. When the lunch lady refuses, the clothing on Mikey's Bonky puppet has vanished, then it reappears in the next shot.
