Carol Lethaby (MA TESOL, with distinction, University of London Institute of Education) has been involved in distance teacher education since 1998, having developed materials and tutored on several distance-learning courses for the British Council and various universities in Mexico. She has also designed and run numerous on-site teacher training and education courses in California, Mexico and the UK, including internationally recognized teaching certificates and diplomas. Her writing credits include several textbook series, including, most recently, co-authoring Just Right (Marshall Cavendish London). Carol lives in San Francisco.