I'm not sure why they did this. Were they simply trying to hide behind the guard wall so I (or someone else?) couldn't see them? What would be the point of that? It's not as though they were skipping class...well, technically they were holding up class, but they had the teacher's permission. And since the hallway is outdoors, it just meant they were crawling along a freezing concrete floor and prolonging their time exposed to the cold and the wind. <shakes head> I don't get it.
The classes involving seniors are scrambling to organize the final lessons. The seniors only have two more weeks of classes before their final exams, and then they won't have to attend school until graduation in March. Most classes only meet twice a week, so it's suddenly dawning on the teachers, "We only have four more lessons!"