This study examines the language spoken at home based on the academic path and language composition of couples. In particular, the study deals with the adoption or retention of a minority official language in Canada--i.e., English in Quebec and French in the other provinces and territories--as the language spoken most often at home. The study is based on data from the linkage between the Postsecondary Student Information System (PSIS) and the 2021 Census of Population, as well as information from the Canadian Information Centre for International Credentials, and looks specifically at graduates who were 18 to 30 years of age in 2021. Since the language spoken at home is the language that is likely to be passed on to the next generation, the retention or adoption of minority languages at home is important for their preservation.