This book is required reading for one of my deaf culture classes on my way to becoming a sign language interpreter. The authors are hearing people and deaf people, collaborating to provide the most in-depth knowledge possible on the subject. I especially enjoy the section that discusses the roles of interpreters for educational purposes, and includes reaction footnotes written by various deaf students of their experiences using interpreters. This text covers so many areas of deafness that would never have otherwise occurred to me to ask. I can see why this book is required reading.