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École secondaire Grande-Rivière, commonly abbreviated as ESGR or E.S.G.R. (both officially and non-officially), a francophone secondary school in Aylmer, Quebec. Its total population is over 2000, including 1992 students and 191 faculty members. Students from all social classes attend it, from the poorer suburbs to the richer neighbourhoods. It is therefore the seat of many different organizations and events, from science fairs to sports teams, and a myriad of things in between.