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Verified Organizations
Organizations in gray have not verified, those in orange have verified but are pending review and those in green are verified and confirmed.
LoadSTACK UP! Stamp of Approval
Participating organizers don't forget to download your WSSA STACK UP! Stamp of Approval as a keepsake of this year's record-setting event. Create one for your School / Organization and for each Participant if you like!
Download YourStamp Of Approval
Previous Years
- 2019 STACK UP! 638,503 Stackers
- 2018 STACK UP! 624,390 Stackers
- 2017 STACK UP! 578,704 Stackers
- 2016 STACK UP! 622,809 Stackers
- 2015 STACK UP! 618,394 Stackers
- 2014 STACK UP! 592,292 Stackers
- 2013 STACK UP! 555,932 Stackers
- 2012 STACK UP! 483,658 Stackers
- 2011 STACK UP! 412,259 Stackers
- 2010 STACK UP! 316,736 Stackers
- 2009 STACK UP! 276,053 Stackers
- 2008 STACK UP! 222,560 Stackers
- 2007 STACK UP! 143,530 Stackers
- 2006 STACK UP! 81,252 Stackers