_{People might’ve scoffed a decade ago at the idea of a high-performing public school in D.C. But educators such as Niles are turning that reputation around. She’s the founder and head of school at E.L. Haynes Public Charter in Petworth, where 80 percent of students passed the city’s math exam this year, and 66 percent passed the reading exam.}

_{What makes E.L. Haynes successful?}