“allowing only top students to enroll in teacher-training programs, which are themselves far more demanding than such programs in America”

Annie Murphy Paul:

This is the first hint of how Finland does it: rather than “trying to reverse engineer a high-performance teaching culture through dazzlingly complex performance evaluations and value-added data analysis,” as we do, they ensure high-quality teaching from the beginning, allowing only top students to enroll in teacher-training programs, which are themselves far more demanding than such programs in America. A virtuous cycle is thus initiated: better-prepared, better-trained teachers can be given more autonomy, leading to more satisfied teachers who are also more likely to stay on.
Kim soon notices something else that’s different about her school in Pietarsaari, and one day she works up the courage to ask her classmates about it. “Why do you guys care so much?” Kim inquires of two Finnish girls. “I mean, what makes you work hard in school?” The students look baffled by her question. “It’s school,” one of them says. “How else will I graduate and go to university and get a good job?” It’s the only sensible answer, of course, but its irrefutable logic still eludes many American students, a quarter of whom fail to graduate from high school. Ripley explains why: Historically, Americans “hadn’t needed a very rigorous education, and they hadn’t gotten it. Wealth had made rigor optional.” But now, she points out, “everything had changed. In an automated, global economy, kids needed to be driven; they need to know how to adapt, since they would be doing it all their lives. They needed a culture of rigor.”
Rigor on steroids is what Ripley finds in South Korea, the destination of another of her field agents. Eric, who attended an excellent public school back home in Minnesota, is shocked at first to see his classmates in the South Korean city of Busan dozing through class. Some wear small pillows that slip over their wrists, the better to sleep with their heads on their desks. Only later does he realize why they are so tired — they spend all night studying at hagwons, the cram schools where Korean kids get their real education.
Ripley introduces us to Andrew Kim, “the $4 million teacher,” who makes a fortune as one of South Korea’s most in-demand hagwon instructors, and takes us on a ride-along with Korean authorities as they raid hagwons in Seoul, attempting to enforce a 10 p.m. study curfew. Academic pressure there is out of control, and government officials and school administrators know it — but they are no match for ambitious students and their parents, who understand that passing the country’s stringent graduation exam is the key to a successful, prosperous life.

The Smartest Kids in The World And How They Got That Way By Amanda Ripley