There are six Halls in Iris Academy, three for girls and three for boys.
Horse Hall (female, green capes) and Wolf Hall (male, orange capes) are for strong people who are adventurous and sporty.
- Characters in Horse Hall
- Virginia Danson (freshman)
- Ellen Middleton (freshman)
- Liz (freshman)
- Anisha (freshman)
- Isobel (senior)
- Characters in Wolf Hall
- Donald Danson (freshman)
- Luke Phifer (freshman)
- Jamal Meer (freshman)
- Kyo Katsura (sophomore)
- William Danson (senior)
Butterfly Hall (female, light blue capes) and Falcon Hall (male, dark blue capes) are for social people who are charming and well-dressed.
- Characters in Butterfly Hall
- Minnie Cochran (freshman)
- Pastel Rao (freshman)
- Laurel Aster (junior)
- Lena (freshman)
- Susan (freshman)
- Angela Kirsch (senior)
- Sarah Danvers (Unknown Grade)
- Characters in Falcon Hall
- Jacob Blaising (freshman)
- Logan Phifer (freshman)
- Damien Ramsey (senior)
Snake Hall (female, purple capes) and Toad Hall (male, yellow capes) are for weird people and loners who don't fit in elsewhere.
- Characters in Snake Hall
- Suki Sato (freshman)
- Raven Darkstar (freshman)
- Barbara Solmoro (freshman)
- Musette Ellis (would-be sophomore, but expelled)
- Corrinna Lee (senior)
- Characters in Toad Hall
- Manuel Arias (freshman)
- Taranis Lenshe (freshman)
- "Big" Steve Kenyon (senior)
- Balthasar Brundrick (senior)