The original name of the show was "What's Lizzie Thinking?" as seen on some of the earlier episodes' blooper reels.
Adam Lamberg, who plays Lizzie's guy friend Gordo, is actually a little more than three years older than Hilary Duff, although their characters are the same age on the show.
Ethan Craft was originally considered the middle school bully, but was later changed to a teen heartthrob.
Sara Paxton was considered for the role of Lizzie before Hilary Duff auditioned. Paxton made a guest cameo in "Lizzie McGuire" (2001) {Election (#1.9)}, also known as "Lizzie for President".
Names on the board of graded students read: Robin Lippin, Polly Mattson, Rick Mercado, referencing to the show's casting director Lippin, key second assistant director Mattson and sound mixer Richard Mercado
Alternate Title; "Here Comes Aaron Carter"
When Lizzie is talking to Mr. Escobar after she first enters the detention room, she is holding a blue and clear binder with a pink sticker with "Lizzie" written on it at the top of the binder. The camera cuts to Mr. Escobar, and back to Lizzie. She's still holding the binder but it no longer has the sticker on it.
CAMEO(David Carradine): Half-brother of series regular Robert Carradine (Sam McGuire) as himself. Sam says that Dave is "like a brother."
Alternate Title; "Gordo and the Magic Dwarves"
Alternate Title; "Lizzie and Kate's Excellent Adventure"
Alternate Title; "El Oro de Diablo"
Alternate Title; "The Rise and Fall of the Kate Empire"
Alternate Title; "Kiss My Budget"
Alternate Title; "Inner Beauty II: A Gordo Story"
Alternate Title; "My Love is a Red, Red Chimp"
Alternate title: "My Dinner with Mr. Dig".
Alternate Title; "Lizzie and Miranda's Magic Train"