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| YEAR | NORTH DAKOTA | MONTANA | SOUTH DAKOTA |
| 2022 | Central High School, Grand Forks | | |
| 2021 | Century High School, Bismarck | | |
| 2020 | Century High School, Bismarck | Helena High School, Helena | |
| 2019 | Minot High School – Magic City Campus | Billings West, Billings | |
| 2018 | Century High School, Bismarck | Helena High School, Helena | |
| 2017 | Bismarck High School | Helena High School, Helena | |
| 2016 | Dickinson High School | Custer County High School, Miles City | |
| 2015 | Dickinson High School | CM Russell High School, Great Falls | |
| 2014 | Bismarck High School | Helena High School, Helena | Rapid City Central High School – Team #1 |
| 2013 | Fargo Shanley High School | Helena High School, Helena | Rapid City Central High School – Team #1 |
| 2012 | Red River High School, Grand Forks | Helena High School, Helena | Aberdeen Central High School – Team #2 |
| 2011 | Red River High School, Grand Forks | Helena High School, Helena | Vermillion High School |
| 2010 | Red River High School, Grand Forks | CM Russell High School, Great Falls | Greater Sioux Falls Home School Association |
| 2009 | Dickinson High School | Helena High School, Helena | Aberdeen Central High School |
| 2008 | Dickinson High School | Skyview High School, Billings | Aberdeen Central High School |
| 2007 | Red River High School, Grand Forks | Skyview High School, Billings | Greater Sioux Falls Home School Association |
| 2006 | Red River High School, Grand Forks | Fergus High School, Lewistown | Rapid City Central |
| 2005 | Jamestown High School | Russell High School, Great Falls | Rapid City Central |
| 2004 | River High School, Grand Forks | High School, Billings | Stevens High School, Rapid City |
| 2003 | Dickinson High School | Russell High School, Great Falls | Stevens High School, Rapid City |
| 2002 | Century High School, Bismarck | High School, Billings | Vermillion High School |
| 2001 | Century High School, Bismarck | Russell High School, Great Falls | Huron High School |
| 2000 | Century High School, Bismarck | High School, Lewistown | Huron High School |
| 1999 | Jamestown High School | Russell High School, Great Falls | Huron High School |
| 1998 | Minot High School – Magic City Campus | High School, Lewistown | Vermillion High School |
| 1997 | Minot High School – Magic City Campus | Fergus High School, Lewistown (Placed 5th at the the 1997 Nat’l Science Bowl Competition in Washington, D.C.) |
Alcester-Hudson High School |
| 1996 | Valley City High School | County High School, Miles City | Philip High School |
| 1995 | Jamestown High School | High School, Lewistown | Central High School |
Last modified on November 5th, 2024