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In Education-Crazy South Korea, Top Teachers Become Multimillionaires

In this education-obsessed country, spiky-haired Cha Kil-yong is a top-ranked math teacher. But he doesn’t teach in a school. He runs an online “hagwon” — or cram school — called SevenEdu that focuses entirely on preparing students to take the college entrance exam in mathematics.

Here, teaching pays: Cha said he earned a cool $8 million last year.