Students are learning more in New York City charter schools, concludes a new study from Stanford’s Center for Research on Educational Outcomes (CREDO). In schools run by charter networks, such as Success Academy, KIPP, and Achievement First, students gained the equivalent of an extra 97 days of schooling in math, 46 days in reading, CREDO estimated. Independent charter schools, which include both strong and weak schools, did worse than networked charters on average, but gaine

Charter schools are most effective for black and Latino students, concludes the new charter-school report by the Center for Research on Education Outcomes (CREDO). Achievement was highest for students attended nonprofit, networked schools. CREDO found much higher achievement for students at schools backed by the Charter School Growth Fund, writes Alex Hernandez, a partner in the fund and a former math teacher. The fund supports nonprofit networks such as Uncommon Schools, Hou