| Year | Dates | Location | Program |
|---|---|---|---|
| 2026 | April 19-22 | Des Moines, IA | Website |
| 2025 | April 13-16 | Lincoln, NE | Program Book Online Program Meeting Photos |
| 2024 | March 24-27 | Fort Collins, CO | Program Book Online Program Meeting Photos |
| 2023* | April 16-19 | Oklahoma City, OK | Program Book Online Program Meeting Photos |
| 2022 | March 20-23 | Minneapolis, MN | Program Book Online Program |
| 2021 | June 21-23 | Virtual | Online Program |
| 2020** | March 15-18 | Oklahoma City, OK | Virtual Student Competition |
| 2019 | March 17-20 | Cincinnati, OH | Program Book Online Program |
| 2018 | March 18-21 | Madison, WI | Program Book Online Program Meeting Photos |
| 2017 | June 4-7 | Indianapolis, IN | Program Book Online Program Meeting Photos |
| 2016 | June 5-8 | Cleveland, OH | Program Book Online Program |
| 2015 | May 31-June 3 | Manhattan, KS | Program Book Online Program Meeting Photos |
| 2014 | March 9-12 | Des Moines, IA | Program Book Online Program |
| 2013 | June 16-19 | Rapid City, SD | Program Book Online Program |
| 2012 | June 3-6 | Lincoln, NE | Program Book Online Program Meeting Photos |
| 2011 | March 13-16 | Minneapolis, MN | Program Book |
| 2010 | March 13-17 | Louisville, KY | |
| 2009 | March 15-18 | St. Louis, MO | Program Book |
| 2008 | March 24-27 | Columbus, OH | Program Book |
| 2007 | March 25-28 | Manitoba, Canada | Program Book |
| 2006 | March 26-29 | Bloomington, IL | Program Book |
| 2005 | March 20-23 | West Lafayette, IN | Program Book |
| 2004 | March 28-31 | Kansas City, MO | Program Book |
| 2003 | March 23-26 | Madison, WI | Program Book |
| 2002 | March 24-27 | Lansing, MI | Program Book |
| 2001 | Fort Collins, CO | Program Book | |
| 2000 | March 26-29 | Minneapolis, MN | Program Book |
| 1999 | Des Moines, IA | ||
| 1998 | Sioux, SD |
