Kathleen Kelly Janus, a lecturer at the Stanford University Program on Social Entrepreneurship and the founder of the successful social enterprise Spark, set out to investigate what makes a startup succeed or fail. She surveyed more than 200 high-performing social entrepreneurs and interviewed dozens of founders. Social Startup Success shares her findings for the legions of entrepreneurs working for social good, revealing how the best organizations get over the revenue hump. How do social ventures scale to over $2 million, Janus's clear benchmark for a social enterprise's sustainability?