A recent data study on America’s charter schools – the third in an ongoing series – shows students with average learning gains of six days in math and 16 days in reading for the academic years 2015-2019. Macke Raymond, a Hoover Institution Distinguished Research Fellow and founder and director of Stanford University’s Center for Research on Education Outcomes, which authored the study, discusses lessons learned and the status of the three-decade charter school movement, the push for better performing traditional public schools, and a growing national conversation on classroom outcomes.