JOPLIN, Mo. — It was cup stacking time again at St. Mary’s Elementary in Joplin. Part of the school’s annual “stack up” event where kindergarten through 5th grade kids were part of a world record ...
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.