Continuity mistake: When the Diggers lift the treasure out of the hole, there is a lock on one side of it. Three shots later, the lock had moved to the opposite side of the treasure chest. The lock then vanishes and reappears in the following shots.
Continuity mistake: After Mikey pours dirt into the hole, he holds the bucket in his right hand, but it disappears in the next shot.
Continuity mistake: When Vince and Spinelli are talking in front of the bathroom doors, when Spinelli says, "How about you and me sneak out... just the two of us," the push plate is missing from the boys' bathroom door, then it reappears a shot later.
Other mistake: When Spinelli tells Gretchen, "Gretchen, what colour is the sky in your world?", Spinelli's neck clips through her dress collar twice.
Other mistake: When Gretchen is in Kelso's Corner Store, Mr. Kelso tells her that if she thinks she got the money in the wrong way, she should just give it back. In this shot, part of Mr. Kelso's shirt collar is incorrectly coloured red; then it changes to its proper tan colour mid-shot.
Other mistake: When Gretchen enters Kelso's Corner Store, the blue and yellow bicycles are slightly cut off at the bottom of the screen.
Continuity mistake: When Gretchen leaves the school building at the end, she leaves the doors open behind her, but when she catches the helmet that Spinelli throws to her, the doors are suddenly closed.
Continuity mistake: After Miss Grotke writes "The Zen of Homework" on the chalkboard, she holds the chalk in her right hand, but it disappears in the next shot.
Continuity mistake: At the start, when T.J. tells Gretchen to save up her allowance so she can buy Ruddler's Red Rocket, Gretchen's helmet strap has vanished; then it reappears a shot later.
That Stinking Feeling - S3-E11
Other mistake: After Gretchen's Galileo says that Spinelli has a crush on Johnny V, T.J. puts his right hand behind Vince's neck, and his hand and cuff disappear mid-shot. (00:05:21)
That Stinking Feeling - S3-E11
Continuity mistake: When Spinelli's father is first shown watching TV, there is no ring on his left hand, but one appears on his ring finger in the next shot. The ring then vanishes and reappears in the following shots. (00:03:32)
Other mistake: The Diggers start digging a hole in the Ashleys' clubhouse, then it cuts to a shot of Gus pouring out the dirt. In this shot, there is a circular object on the roof of the cafeteria building (presumably a satellite dish) that has been left uncoloured.
Here Comes Mr. Perfect - S4-E18
Continuity mistake: When Jared enters the classroom and introduces himself, he leaves the door open behind him, but two shots later, it is closed.
Continuity mistake: On the day of the PTA Spring Fling, Principal Prickly wonders where Mikey is, and when Miss Finster says, "We've looked everywhere, sir," she wears her watch on her left wrist and her bracelet on her right wrist. In the next shot, the bracelet on her right wrist has been replaced with her watch. In the following shot, the watch has vanished from her wrist.
Continuity mistake: When Antonio proposes to Miss Salamone, he puts the ring on her middle finger, but in the next shot, it is on her index finger.
Other mistake: After the kids start fighting over the treasure, T.J. gives a speech to them. Then, when it cuts back to the other kids, Ashley T's socks are mistakenly coloured the same as her skin instead of green, as they should be. This error is shown again in the shot after the kids drop the treasure chest.
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: 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 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.
