Since Finland emerged in 2000 as the top-scoring Organisation for Economic Co-operation and Development (OECD) nation on the Programme for International Student Assessment (PISA), researchers have been pouring into the country to study the so-called "Finnish miracle." How did a country with an undistinguished education system in the 1980s surge to the head of the class in just a couple of decades? Research and experience suggest that one element of the Finnish system trumps all others: excellent teachers and leaders. This article looks at how Finland develops such excellence in its teacher workforce.