Continuity mistake: The kid who says "Dumb 4th graders..." IS a 4th grader. Watch the beginning of "The New Kid" and you can see him in Mrs. Grotke's class.
Continuity mistake: Throughout the scene where Spinelli shows off her jump roping skills, the two Ashley's swinging the rope quite awkwardly and choppily go from a normal to a surprised expression every second or so.
Continuity mistake: When TJ is in The Box, he lays down and puts his head on his baseball glove. Then when he gets up, he doesn't pick it up, but it's nowhere to be seen. Then a couple of shots later, it's back, and it's on the other end.
The New Kid - S1-E2
Continuity mistake: In the beginning, as Gus' dad walks away, the lights on the ceiling are 3 tiles apart. However, while Gus is describing his "personal journey," the lights are two tiles apart.
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.
The Legend of Big Kid - S1-E14
Continuity mistake: At the end of the episode, when the gang is caged, right after Vince gives TJ the baseball card, TJ's facepaint turns from blue to red, then back to blue. (00:08:35)
Continuity mistake: When Gretchen is playing with Cornchip Girl, she puts down a card which is the orange cheetah. but after she has talked to TJ, it has suddenly changed to a completely different animal.
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.
Continuity mistake: When TJ makes the morning announcements, in the first scene of the classroom we see a boy in a blue hat sitting in the back row. After TJ says that the kids can refuse to answer a teacher, the same kid is suddenly sitting in the second row so he can slap hands with someone in the first row.
Continuity mistake: When Vince's family is eating dinner, Chad's bow tie changes at least twice from red to black.
The New Kid - S1-E2
Continuity mistake: In the beginning, Gus' dad steps aside to reveal Gus behind him. Then, he says, "Well, my duty here is done. Mrs. Grotke, boys and girls," and then salutes them and walks away. He has moved back behind Gus. He had no time to move to that position.
Continuity mistake: When Library Kid sees her kindergarten class, she's wearing a dress, but when she runs into the library, she's wearing a T-shirt and skirt.
Continuity mistake: When TJ comes to school in the morning and everyone starts cheering, we see two Ashleys clapping with everyone else. As the camera follows TJ as he walks to the entrance, we see the same two Ashleys a second later.
Continuity mistake: After Mrs. Finster has her show of strength and is pulling Gus away, he still has the chains from the wheel on his arm. When the shot changes, the chains are gone.
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.
Continuity mistake: When Menlo tells the crew about Randall's joke book, he loosens his tie, and it's still loose when he says "Indeed." But half-a-second later, as he walks away, his tie is back to normal.
Spinelli's Masterpiece - S4-E27
Continuity mistake: When the kids are all on the jungle gym to see Spinelli's drawing, Jerome can be seen sitting on the bar of the swings. However, when everyone is cheering he has suddenly moved to the ladder.
Here Comes Mr. Perfect - S4-E18
Continuity mistake: When Jared is holding his speech, Jerome's jumper turns blue twice.
Omega Kids - S2-E16
Continuity mistake: When TJ tells Vince to throw him a pepperoni pizza, Vince has two pizzas - one in his hand and one on his plate. In the next shot the pizza on the plate has vanished.
Continuity mistake: When Randall's dad is talking to the gang about what Randall's 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 in the next shot.
