“They suspected that children learned best through undirected free play—and that a child’s psyche was sensitive and fragile. During the 1980s and 1990s, American parents and teachers had been bombarded by claims that children’s self-esteem needed to be protected from competition (and reality) in order for them to succeed. Despite a lack of evidence, the self-esteem movement took hold in the United States in a way that it did not in most of the world. So, it was understandable that PTA parents focused their energies on the nonacademic side of their children’s school. They dutifully sold cupcakes at the bake sales and helped coach the soccer teams. They doled out praise and trophies at a rate unmatched in other countries. They were their kids’ boosters, their number-one fans. These were the parents that Kim’s principal in Oklahoma praised as highly involved. And PTA parents certainly contributed to the school’s culture, budget, and sense of community. However, there was not much evidence that PTA parents helped their children become critical thinkers. In most of the countries where parents took the PISA survey, parents who participated in a PTA had teenagers who performed worse in reading. Korean parenting, by contrast, were coaches. Coach parents cared deeply about their children, too. Yet they spent less time attending school events and more time training their children at home: reading to them, quizzing them on their multiplication tables while they were cooking dinner, and pushing them to try harder. They saw education as one of their jobs.”