In a windowless classroom, in a tough New Orleans neighborhood, a middle-aged man with piercing eyes is teaching math at top volume.
"I got a SINGLE DOLLAR if someone can tell me what's the RULE to this problem!" he intones.
Today's lesson is about the order of operations, a topic usually taught in elementary school. On average, Rodney Carey's students are working at a fifth-grade level. But they are much older, aged 16 to 24.
Mr. Rodney, as he is known, does whatever he can to motivate them, whether that's ordering in Chinese food or giving out cash prizes.