This is the note I received from the National Geographic Kids Magazine:
Thank you for participating in National Geographic Kids' Guinness World Record attempt for the Most People Doing Jumping Jacks in a 24-hour period. We are proud to report that we have broken the record with 300,265 people! Congratulations to all who participated!
Great JOB Anderson 4th grade students! I have the certificate to show you on January 2, 20012.
Don't forget about the Winter Break Challenge! The class with the highest participation will score an extra PE day! HUT HUT!