Charter school enrollment is at an all-time high in many cities, according to a new report from the National Alliance for Public Charter Schools. Nearly 3 million students now attend charter schools, or roughly one in 16 public school students nationwide.

Charter enrollment is at record highs in New Orleans, Detroit, Washington, D.C., Kansas City, Philadelphia, Indianapolis, New York City, Los Angeles, Miami and Houston, among other urban districts. The share of public school students in charter schools is also at record highs in those cities. Data are for the 2014-15 school year, the most recent available.