Rebels
Founded: 1987-88
Colors: Royal Blue & Silver
Conference: North Iowa Cedar League
County: Grundy
Website: gr-rebels.net/
STATE TOURNAMENT HISTORY
STATE CHAMPIONSHIPS
TEAM CHAMPIONSHIPS
BOYS
| Sport | # | Years |
| Basketball | 1 | 2015 |
| Football | 2 | 2015, 2016 |
| Golf | 1 | 1999 |
GIRLS
None
INDIVIDUAL CHAMPIONSHIPS
BOYS
| Sport | Titles |
| Track | 3 Outdoor Event Championships |
GIRLS
None
STATE TOURNAMENT APPEARANCES
TEAM QUALIFIERS
BOYS
| Sport | Titles | Years |
| Baseball | 3 | 1988, 2007, 2015 |
| Basketball | 5 | 2015, 2016, 2017, 2023, 2024 |
| Football | 18 | 2001, 2004, 2005, 2008, 2010 , 2011 , 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 |
| Golf | 2 | 1990, 1999 |
| Soccer | 3 | 2009, 2015, 2016, 2023 (as Grundy Center/Gladbrook-Reinbeck) |
GIRLS
| Sport | Titles | Years |
| Basketball | 1 | 1994 |
| Volleyball | 5 | 1988, 2018, 2020, 2021, 2022 |
