The CORE Project e-textbook is an online textbook in Economics for college students created by economists from all over the world. It’s a bit advanced to use as the sole text for high school students, but teachers should be able to use this resource in many different ways.
John Cassidy in The New Yorker writes:
The project is a collaborative effort that emerged after the world financial crisis of 2008–9, and the ensuing Great Recession, when many students (and teachers) complained that existing textbooks didn’t do a good job of explaining what was happening. In many countries, groups of students demanded an overhaul in how economics was taught, with less emphasis on free-market doctrines and more emphasis on real-world problems.
Of course, that criticism doesn’t apply to WorldView Software’s Economics — we’ve had the comprehensive Tutorial: Global Financial Crisis for years!