n August, Michigan public school teacher Stephanie Keiles became a folk hero when she went public with her story about why she was quitting her job. Keiles had spent nine years as a teacher in Plymouth-Canton Community Schools when she announced in an online essay that she was leaving the profession. The Michigan Education Association promoted her story as did prominent national websites, including The Washington Post and Huffington Post. A Michigan newspaper columnist recited Keiles' claims as if they were the gospel truth as an example of how teachers are not respected. National public schools advocate Diane Ravitch even...