KNIGHTS
Founded: 1988-89
Colors: Red, Black, Silver
Conference: North Iowa Cedar
County: Black Hawk
Website: union.k12.ia.us
STATE TOURNAMENT HISTORY
STATE CHAMPIONSHIPS
TEAM CHAMPIONSHIPS
BOYS
| Sport | Titles | Years |
| Football | 1 | 2011 |
| Wrestling, Dual Team | 2 | 2004, 2015 |
GIRLS
| Sport | Titles | Years |
| Cross Country | 5 | 2001, 2007, 2008, 2009, 2010 |
INDIVIDUAL CHAMPIONSHIPS
BOYS
| Sport | Titles |
| Track & Field | 1 Outdoor Event Championship |
| Wrestling | 22 Individuals |
GIRLS
| Sport | Titles |
| Track & Field | 4 Outdoor Event Championships |
| Wrestling | 1 Individual |
STATE TOURNAMENT APPEARANCES
TEAM QUALIFIERS
BOYS
| Sport | # | Years |
| Basketball | 1 | 1990 |
| Football | 15 | 1992, 2008 , 2009, 2010 , 2011, 2012, 2013 , 2014, 2015 , 2016, 2017, 2018, 2021, 2022, 2023 |
| Golf | 2 | 2005, 2019 |
| Wrestling, Dual Team | 8 | 2000, 2003, 2004, 2006, 2007, 2009, 2013, 2015 |
GIRLS
| Sport | # | Years |
| Basketball | 2 | 2000, 2001 |
| Soccer | 7 | 2009, 2010, 2011, 2012, 2015, 2017, 2019 |
| Volleyball | 8 | 2010, 2011, 2012, 2013, 2014, 2016, 2019, 2020 |
