After sweating in sweltering heat in my classroom for a few weeks, I have rigged fans in strategic places throughout the room so that, when the stars align, it is bearable to remain in my classroom for more than a few minutes.  I've emailed the school building supervisor and as has been the case for several weeks, "We're waiting for the parts."

This morning I saw district workmen at the door of my neighboring teacher (who is having the same AC problem) and I excitedly trotted over to visit her.  She was working with the lights off in her room to slightly alleviate the heat. 

Me: "Oh! Are they fixing the air?"
Her (laughing hysterically): "Oh nooooo!  I reported my overhead screen broken at the beginning of the year and they are just now getting to it."
Me (disappointed): "Oh."
Her (still laughing): "You actually thought they were fixing the air??!"
Me: (walking dejectedly from room, murmuring under breath): "I was so naive..."

So I've decided to tell all the students to tell their parents to complain.  Cheap shot but effective.