the number of those actually deserving promotion is appallingly low. But next year, there will be another swarm of eighth-graders. And they can’t be taught if a third of last year’s class is hulking in the back of the room. “Gregg.” “His stepfather got him working.” “Pass.” What is left at the end of such an exercise is a school system playing with numbers in the same way that the police department must, a bureaucracy still seeking some proportional response to a problem of complete disproportion.