““The Korean private market had unbundled education down to the one in-school variable that mattered most: the teacher. It was about as close to a pure meritocracy as it could be, and just as ruthless. In hagwons, teachers were free agents. They did not need to be certified. They didm;t have benefits or even guaranteed base salary; their pay was determined by how many students signed up for their classes, by their students' test-score growth, and, in many hagwons, by the results of satisfaction surveys given to students and parents.””
