large group of students, likely a school choir, standing in a room

large group of students, likely a school choir, standing in a room. They are wearing matching uniforms of white shirts and dark bottoms with ties. A woman in a nun's habit stands in front of them, presumably directing or addressing them. To the right of the frame, a few individuals are sitting on blue plastic chairs, possibly teachers or guests observing the group. The room is simple, with light-colored walls, tiled floors, and several windows high on the wall. A crucifix is mounted above the windows. The students are mostly facing forward, attentive to the nun. The overall impression is of a formal or semi-formal school event, possibly a rehearsal or performance.