In the world of venture capital and business start-ups, the greatest measure of success is a company that is valued at more than $1 billion and earns over $100 million annually. These businesses are called “unicorns,” and according to the analytics firm CB Insights there are more than 1,200 such companies operating in the U.S. today, over 500 of which were created in the past decade. So why is it that despite significant financial backing over the same decade – via venture capital and government funding – very few educational technology companies have reached unicorn status? Let me count the ways. READ MORE