Continuity mistake: When TJ's friends climb on the jungle gym to try and take TJ's place, we see that Gretchen is the last one up and there is no-one on the bars behind her. But in the next long shot, Mikey is right behind her. Then when it shows a close-up of them, Mikey is gone again; then he reappears a moment later.
Continuity mistake: Throughout the scene where Spinelli shows off her jump roping skills, the two Ashleys swinging the rope quite awkwardly and choppily go from a normal to a surprised expression every second or so.
Other mistake: After Dave takes away Mikey's lunch tray, it fades to a shot of the school clock, and there is no 5 on it.
Continuity mistake: In this episode, it shows Randall in Miss Grotke's class, but in every other episode, it's never shown him in there.
Other mistake: When Spinelli tells Gretchen, "Gretchen, what colour is the sky in your world?", Spinelli's neck clips through her dress collar twice.
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.
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: 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.
Continuity mistake: After getting off the school bus, when Gus falls into the hole that Sam has dug in front of the school, he's wearing his watch as usual. As Gus sits up, his watch vanishes mid-shot; then it reappears on his wrist.
Continuity mistake: After Upside-Down Girl tells TJ he must do something about Dave, when the gang look for Sam and discuss the situation with him, the clock over the school doors repeatedly changes time between shots. Then, when Sam grabs the shovel and jumps back into the hole, the two hands of the clock vanish, only to reappear and change time yet again.
Other mistake: At lunch, when Sam is using a spoon to shape his mashed potatoes on the tray, his right arm clips through the tray just as he says, "Maybe I should clear out the east wall like this." Then, when Sam says, "Maybe I should fortify the south side first," he's using the spoon to move the mashed potatoes on top of the tray, but his arm and spoon are under the tray, so it looks as if the potatoes move on their own. Additionally, when Sam states that he's so confused, the spoon held up in his right hand appears to vanish in the next shot.
Continuity mistake: The gang hatches a plan and tells Dave that Sam is trapped in a cave-in, so Dave begins digging to save him. When Sam and Spinelli return with their ice cream cones, Sam's gloves vanish and reappear a couple of times while he is holding his ice cream.
Continuity mistake: When Randall begs Gretchen to do his homework, Mikey says, "Tutoring is just another word for helping," and his backpack is green. A few seconds later, it changes to blue.
Continuity mistake: When Randall's dad is talking to the gang about what Randall has been telling him about them (when they are outside, in front of the bouncy thing), his moustache disappears mid-sentence (in a close-up of him) and reappears when he is shown again.
Continuity mistake: At the very beginning, Gus drinks his entire carton of chocolate milk. Then in the wide shot, his carton is white. Back to a close up, and it's brown again.
Call Me Guy - S4-E10
Factual error: When Gus walks in, all kinds of kids have their backpacks on, like they just got there. Then Jordan asks Gus when he got there, which was 7:58, just a couple of minutes ago. Then TJ says, "Who's up for some kickball?" But it is already after 8:00, meaning they would be late.
Plot hole: Why did Mikey jump to make the feathers fly if Vince said to abort? When TJ gets hit by the feathers, he's on the 'X marks the spot.' But when he got honeyed, he was nowhere near it. Before TJ gets feathered, He gets up onto his feet, like he had fallen down. But he was still standing when Mikey fired the feathers.
Here Comes Mr. Perfect - S4-E18
Continuity mistake: When Jared is talking to the whole school about shunning him, his undershirt changes from white to blue to white again.
