| Season 2, Episode 11|
| Written &|
"High School" is the eleventh episode in the second season of CamDog and ACat's episodes. It is the thirty-seventh episode overall.
While doing an experiment with her time machine, Princess Bubblegum accidentally sends herself and all of Ooo back in time and to a high school where they gain alternate identities and meet Moseph Mastro Giovanni, Simon, Lucas, and Betty in their high school years.
- Finn DiMaggio/Finn
- Princess Bubblegum/Bonnibel Bernald
- Marceline Vorpine/Marceline
- Lucy Sparrow/Lumpy Space Princess
- Fiona Prim/Flame Princess
- Addeline "Addie" Vorpine/Attie
- Belle Garfield/Gargelle
- Tyler Trusselan/Tai
- The high school in this episode is known as Wut-Wut High and is located in the Wut-Wut State, which was on the license plate of the Clambulance in "Simon & Marcy".
- Finn's alternate self, Finn DiMaggio, constantly has visible blond bangs.
- Finn's last name in the Wut-Wut timeline is a reference to John DiMaggio, Jake's voice actor.
- Tai (though not Tyler, his alternate self) is seen wearing the ring again in this episode.
- Attie and Marceline's alternate selves are sisters in this episode.
- Belle Garfield has a different voice than Gargelle and does not have an African-American accent.
- The time of Luna and Marceline's first meeting, along with Moe and Finn and Jake's first meeting, Simon and other characters' first meetings, and Betty and other characters' first meetings, were changed in this episode.
- This episode contains the most characters out of any episode so far in the series since every single living character in Ooo (including the Lich, who is in the waving snail's body) can be seen at the end. Robots are not counted as living characters and were not taken to Wut-Wut High with the others, though BMO and NEPTR are shown alone in the Tree Fort back in Ooo in one scene. An early model of BMO is also shown as a prototype robot that Moe is working on.
- This is the first time in all of CamDog and ACat's episodes that the twelve main characters (Finn, Jake, Princess Bubblegum, Marceline, Lady Rainicorn, LSP, Flame Princess, BMO, Attie, Simon, Betty, and Tai) all physically appear in an episode.
- The Earl of Lemongrab is even fatter in this episode than he was in "Too Old".
- Ash is seen wearing a full-body cast in this episode, probably due to what happened to him at the end of "Memory of a Memory".
- Both the normal snail and his creepy, humanized self are in this episode, both still being possessed by the Lich.
- Addeline, Attie's alternate self, says that her birthday is the next day. This is confirmed to be true in both timelines by Attie at the end of the episode.
- This episode's title is somewhat similar to that of "Wizard School" although their plots are completely unrelated.