Longman Dictionary of Contemporary English
home room
noun
EXAMPLES FROM CORPUS
▪ Maybe that means that it happens in home room.
▪ The new girl in home room.
▪ This will be a home room thing.
Wikipedia
Home Room (film)
Home Room is an independent film starring Erika Christensen, Busy Philipps and Victor Garber. It premiered in the Taos Talking Pictures Film Festival on 12 April 2002, and made its limited theatrical release on 5 September 2003.