I was a student in a slum of an apparently ruined modern city. Most of the dream seemed to revolve around my inability to get work done, show up to class on time, or get along with fellow students at a high school that strongly resembled L-school, an American school for U.S. military brats I attended in England.
One thing that stands out is my old L-school classmate, JRR, being mildly slighted by either a student or a teacher, and overreacting with a violent assault of insults (inssault? ansult?) that made him look a fool and certainly did not improve his situation with said teacher.
However, there was some other interesting stuff going on. Exploring the ruined streets and overgrown rubble of the city, I was able to find all kinds of cool stuff. There were street gangs, cannibals, secret technology projects stored in unmarked buildings, stuff like that.