Baltimore City Schools announced Thursday night that its non-air-conditioned schools will close early Friday for the fourth straight day. That includes 12 high schools and 10 with football teams. City, Poly, Edmondson, Douglass, New Era, Patterson, Lewis and Ben Franklin are scheduled to play Friday. Mervo was already scheduled to play at William Penn in New Castle, Del., on Saturday. National Academy Foundation did not have a game scheduled this weekend.