Students in grades 4th through 8th may participate in the Saint Isabella School Choir. Choir is an elective activity, with try-outs in the fall. The choir practices during part of the school day and students must maintain the behavior and commitment expected to be a member. The choir performs at liturgical celebrations, school Christmas and Spring concerts, the Opera Together program in partnership with the San Francisco Opera Guild, and at the annual Archdiocesan Choral Festival.