A great special report on attempts to reform the US K-12 education system [from Fortune]:
http://fortune.com/common-core-standards/
Knowledge capital, growth, and the East Asian miracle
http://hanushek.stanford.edu/sites/default/files/publications/Hanushek%2BWoessmann%202016%20Science%20351%286271%29.pdf
Harvard economist Claudia Goldin on Human Capital
http://scholar.harvard.edu/files/goldin/files/goldin_humancapital.pdf