JOPLIN, Mo. — It has been a tradition at St. Mary’s Catholic Elementary in Joplin for close to 15 years. And it continued on Thursday. The school’s Stack Up event involved kids in all grades ...
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.