Continuity mistake: When Miss Chokesondik first lectures the girls on STD's the words "Sexually Transmitted Diseases" appear on the blackboard although partially obscured as it is a narrow shot of the teacher. The view then changes to a wide shot of the blackboard and nothing is written on it. Miss Chokesondik then proceeds to write "Sexually Transmitted Diseases" on the board. (00:05:35)
Continuity mistake: When Mr. Garrison returns to the classroom with his new face and does the posing to "Shadow Dancing," it flashes back to the students and Wendy is dressed in her normal clothes instead of the black leather she wore to impress Stan. Next time it shows her, she's back to normal.
Continuity mistake: In the scene where Mr. Garrison is telling the students to to get in place for the play, Kenny is seen in the group. Despite the fact that he is supposed to be taking the star or the ceiling at that point. He is then seen seconds later climbing down the ladder with the star.Ssiscool
Continuity mistake: Season 10, Episode 10: "Miss Teacher Bangs A Boy". When Miss Stephenson is drawing shapes on the blackboard, she draws a circle and a square only, and then is disrupted by Cartman. At the end of the scene where she is erasing the board, a triangle is now on the board with no time to draw it.
Continuity mistake: When the town has a Conjoined Twin Myslexia Parade, and Nurse Gollum is walking; you see her right hand down as she walks, and no people in the background. Then the shot changes, and you see her right hand up waving, and people where there weren't any before.