From the Daily News:
The Education Department overhauled its method for rating principals last year - and still only found four in the whole system who failed to meet standards.
Only four. And there are 1,400 principals in the system. And this is after the city implemented reforms in how it rates principals. How do you like that for accountability? What exactly do you have to do to get a bad rating as a principal in New York? You probably have to do something crazy to get on that list, like wear a "Sarah Palin in 2012" button. That certainly would create a hostile learning environment.