EVERMAN, Texas — A high school principal has left her position two weeks after singling out black students' poor test scores over the school's intercom system. The Everman Independent School District announced Kathy Culbertson's departure in a Tuesday statement. It said her comments had overshadowed district achievements. During an address on the first day of classes at Everman High School, Culbertson said black students who failed math on the state's accountability test had caused the high school to be rated unacceptable. The remarks set off a racially charged debate at the suburban Fort Worth campus, which is about 59 percent...