They actually leave

Miss Sullivan tries to regain her composure, holding her tattered blouse across her chest, feeling the eyes of the entire class on her bra as they slowly file out of the room, some of the boys lingering far longer than they normally would when packing away.

Stood there shivering under their gaze, Miss Sullivan waits silently, thankful that none of the students appear to be brave, or foolish enough to attempt to take any photos or anything as they go.

After what felt like an age the students are finally all gone and Miss Sullivan finally turns her attention to the blouse, completely ruined. How the hell is she supposed to do anything without a shirt?