Success Academy has grown quickly — in just 12 years, the network has gone from one school in Harlem to 47 schools across New York City. In order to do this, Success has had to hire many inexperienced teachers, and move them up the ranks quickly. Amidst all this growth, there is a lot of pressure on the staff to continue performing at incredibly high levels. And Success has managed to keep crushing the state tests. In episode 4 of the series, we examine how growth has changed Success for better, and for worse.--Thanks to our sponsor, Cole Haan. You can hear more of Lisa and other Gimlet hosts in conversation at ExtraordinariesOnTheMic.com, produced in partnership with Cole Haan.