Observers–most recently, John Merrow on OBS Newshour–have long wondered whether Eva Moskowitz’s Success Academy charter schools were getting high test scores by weeding out low-performing students (scholars).

Kate Taylor of the New York Times learned that the elimination of unwanted students is practiced assiduously in some (perhaps all) SA charters. She even learned that one of them maintained a “got to go”list of unwanted students.

The SA schools have rigid behavior rules. Those children who do not obey without hesitation don’t belong. This is the Secret of Success.