Back in September of 2005, on the first day of school, Martha Cothren, a social studies school teacher at Robinson High School in Little Rock, did something not to be forgotten. On the first day of school, with permission of the school superintendent, the principal and the building supervisor, she took all of the desks out of the classroom. The kids came into first period and there were no desks. They obviously looked around and said, "Ms. Cothren, where's our desk?" And she said, "You can't have a desk until you tell me how you earn them." They thought, "Well,...