Continuity mistake: In episode 64, "For Whom The Bell Tolls. And Tolls. And Tolls", Tracy is shown seated at the table with a bowl of cereal - but in the shots immediately before and after, she's not there, nor is there any food at her place. (00:01:10)
Visible crew/equipment: In episode 31, "Whatever Happened To Moby Dick?", as the whale jumps out of the water, the reflection of the boom operator is visible on its side. (00:21:40)
Other mistake: The Partridge family is suppose to be famous, but they never seem to play to more than a small handful of people in some lounge.
Visible crew/equipment: When Danny and Mr. K are sitting outside, you can see the shadow of a crew member on the door.
See Here, Private Partridge - S1-E4
Continuity mistake: When they are in the bus on the way to record an album, Shirley is wearing a pale blue turtleneck with a scarf. Suddenly she has a hat on and then they cut back to her again and she is wearing something navy blue with a white collar. Then she is wearing a pale blue turtleneck with a scarf again.
Continuity mistake: At the end Laurie is in the kitchen with her mom and Keith. She tells Keith the boyfriends of the girls who were chasing him are at the door. Her hair is down. Keith runs out of the door and she hollers after him. When they cut back her hair is in a ponytail.
Audio problem: In the final song, "This is What It's Like to Be Lovers", the lead male studio singer starts the song, not David Cassidy, then they switch to David Cassidy's real voice halfway through for just two lines, then they switch back to the male voice of the studio singer.
Continuity mistake: Shirley, Reuben and Laurie are standing outside the bus having a conversation; however, the individual shots show Shirley and Laurie standing in the same place at the same time - in front of the G in 'Partridge' on the side of the bus. (00:11:25)
Visible crew/equipment: The wire used to guide Danny's arrow is visible. (00:16:25)
Character mistake: Marvin states Laurie's eyes are green, when in fact Susan Dey's eyes are blue.
This Male Chauvinist Piggy Went to Market - S3-E1
Revealing mistake: When Laurie goes to flip Goose over her shoulder, it's obvious that a stuntman is actually flipped; he has much shorter hair than the actor portraying Goose. (00:11:45)
Princess and the Partridge - S3-E3
Continuity mistake: Keep an eye on the woman seated behind the Princess at the concert. In some shots she is wearing a necklace and seated beside a younger man; in others, she has no necklace and is seated beside an older man. (00:21:55)
Continuity mistake: Shirley tosses a loose measuring tape to Laurie, yet when Laurie catches it, it's tightly coiled. (00:06:00)
