|First Day of School|
|Airdate||September 7, 2008|
|Previous||Dora Saves the Mermaids|
|Next||The Backpack Parade|
First Day of School is the 1st episode of Dora the Explorer from season 5.
Boots & Tico are going to school together. Boots brushes up on his Spanish while Tico brushes up on some English.
- This is the 1st episode where there's a new voice actor for Dora, Boots, Backpack and Tico. The characters were recast due to the age of the original child actors.
- This is also the 1st episode that Dora's voice is medium-pitched.
- This is also the 1st episode to premiere in 2008.
- The voice of Map & Swiper is still Marc Weiner.
- Swiper manages to swipe items of two characters at once (Boots and Tico's).
- The tunes of "Backpack", "I'm the Map" and the "We Did It song" still don't change their music.
- This is the first episode for Season 5.
- From now on at the end of the introduction and at the end of the episode, there will be a fade in and fade out effect.
- The blue cursor will no longer click on Dora at the end of the episode from now on.
- Dora's voice becomes a lot squeakier than her voice from season 2-4, possibly because she has a different voice actress.
- Dora's same face is from Go, Diego, Go!, Dora's Dance to the Rescue, Dora's World Adventure and Dora Saves the Mermaids.
- Starting with this episode, an instrumental tune of the main theme song introduced from season 3 plays at the end of the show.
- Starting with this episode, the show is now using Nickelodeon. Logos from now on.
- This is the 102nd episode of the show.
- The theme song received minor changes. Since the "star catching" portions have been dropped, all clips relating to stars were removed; a rainbow appears in place of the stars at the beginning, no stars follow behind Tico's car, and clips from Dora Saves the Game, Dora Saves the Snow Princess and Benny's Big Race replace the ones from Stuck Truck and Louder!. Finally, no Nick Jr logo (later the new Nickelodeon logo) appears above the show's logo at the end.