In her new memoir, Dr. Jill Biden, Ed. D., fondly recounts the moment she had "never felt prouder to be an educator." You might assume it happened in a classroom. But that's not how the good doctor rolls. The former first lady's proudest moment as a professional teacher took place in the White House State Dining Room, where she hosted the first-ever Teachers of the Year dinner. In the book, View from the East Wing , she boasts of curating an exquisite menu of celery root salad, lobster ravioli,