Doug Lemov is a former teacher and school principal. He helped found Uncommon Schools, a network of high performing schools in under-served communities. His book Teach Like a Champion (now Teach Like a Champion 2.0) describes techniques used by exceptional teachers. It has sold more than a million copies and been translated into a dozen languages. His other books include Practice Perfect: 42 Rules for Getting Better at Getting Better and Reading Reconsidered. He played soccer at Hamilton College, where he was the worst player of the decade. He has an MA in English from Indiana University and an MBA from the Harvard Business School. Follow him on Twitter at @doug_Lemov.