Fifth-grade teacher Tisha Waller can leap over other teachers in a single bound. Waller, 27, set a U.S. indoor high-jump record last week when she leaped over a bar that was 6 feet 7 inches above the ground. "I was just jumping, doing what I enjoy," she said. But how does the busy Atlanta, Georgia, teacher have time to grade homework assignments and train for the high jump? "I've learned to keep my balance," she said. Her proud students created a poster to greet the new champ.