Although ethnocultural diversity is a recent reality for francophone schools in Acadian minority communities, it has already attracted the attention of educational stakeholders, particularly with regard to its pedagogical management by teachers. This article analyses what francophone teachers say about their experience with the management of ethnocultural diversity in multicultural classrooms. The results of a qualitative analysis based on grounded theory show that the management of ethnocultural diversity in New Brunswick francophone schools presents a new pedagogical challenge for which teachers are trying to find practical solutions. Despite the advantages of this diversity, the results also indicate that there are institutional and pedagogical challenges related to parent-teacher collaboration and pedagogical preparation for teaching in a multicultural classroom. To deal with these challenges, several practices have been implemented by teachers.