Editor's note: This segment was rebroadcast on Sept. 30, 2025. Click here for that audio. In the early 2000s, thousands of U.S. schools had their students race the clock to stack cups in gym class.

BOISE — On Tuesday morning, fourth and fifth graders at Cecil D. Andrus Elementary filed into the gym for P.E. class — and to break a world record. They aimed to achieve the record for the most people ...