Mr. Star broke the news gently. "Well, 4B," he said, "it appears we're going to do it." It was the talk of last year's fourth, especially the part about the catfish between the principal's sheets. It is the good-behavior reward for this year's fourth grade. It is Outdoor Education: three days at Camp Trotter in Wisconsin. From where Hobie Hanson sits -- at Central School in Stockton, Illinois -- it is bad news. Three days also means two nights, two...