Grundy Co. High School was founded in 1928 in Tracy City. From 1894 until 1928, the county's high school students attended James K. Shook School in Tracy City. The current building in Coalmont opened in 1997.
Baseball
Championship Record: 2-8
Appearances (4): 2018, 2004, 1992, 1988
Girls' Basketball
Championship Record: 4-3
Appearances (4): 1998, 1986, 1981, 1979
Team Champions (1): 1998
Boys' Cross Country
Individual Appearances (2): 2015, 2017
Girls' Cross Country
Team Appearances (1): 2018
Individual Appearances (1): 2018
Football
Championship Record: 5-22
Appearances (22): 2024, 2023, 2022, 2021, 2020, 2014, 2013, 2012, 2011, 2010, 2009, 2004, 2003, 2002, 2001, 2000, 1999, 1996, 1995, 1994, 1993, 1991
Boys' Golf
Individual Appearances (3): 1991, 1999, 2022
Girls' Golf
Individual Appearances (4): 1974, 2008, 2022, 2023
Wrestling
Championship Record: 6-13
Appearances (11): 2003, 2002, 2001, 2000, 1999, 1997, 1996, 1995, 1994, 1983, 1982
Dual Wrestling
Championship Record: 0-3
Appearances (1): 1997
Team Runner-up (1): 1997