The Empire State’s top public-school system is no longer in Scarsdale or any other suburb; it’s right here in New York City — the Success Academy Charter Schools network.

With 11,000 students in schools across four boroughs, Success is a system in its own right. And it romped in the latest state exams: 93 percent of Success scholars passed the math test, against 35 percent for the city as a whole and 75 percent for Scarsdale.