(updated, June 2017)
HOLLY won the Flint Metro League All Sports Trophy during the 1993-94 school year.
* = shared championship
** = shared plus cooperative program
Fall Sports
Boys Cross Country: 1973, 1976*, 1977, 1978, 1980, 1981*, 1983, 1984, 1985, 1986, 1988, 1989, 1993, 1994*, 1995, 1996, 2013, 2014
Girls Cross Country: 1981, 1987, 1991, 1993*, 1994, 1995*, 1998, 1999, 2001, 2002*, 2006*, 2008*, 2009*, 2011
Football: 2011*
Boys Soccer: 2010
Boys Tennis: 1984, 1989, 1990, 1992, 1994, 1995, 1996, 1997, 1998, 1999*, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2013, 2014, 2015, 2016
Volleyball: 1993-94*, 2019*
Winter Sports
Boys Basketball: 2000-01*, 2003-04, 2008-09*, 2013-14, 2014-15
Girls Basketball: 1980*, 1983, 1993*, 2013-14 undefeated regular season 20-0
Boys Bowling: 2008-09*, 2009-10*
Ice Hockey: 2011-12**, 2014-15**
Boys Swim: 2004-05 through 2008-09
Wrestling: 1982-83, 1991-92, 2004-05, 2006-07*, 2010-11, 2011-12, 2012-13, 2018-19
Spring Sports
Baseball: 1970, 2013
Softball: 1977*, 2017*
Girls Tennis: 1982 through 2011, shared in fall 1985 and fall 1995, 2013, 2015, 2016, 2017, 2018
Boys Track: 1969, 1970, 1971, 1972*, 1974*, 1975*, 1977, 1978, 1979, 1981, 1983, 1985, 1986, 1990, 2008, 2009, 2011, 2013, 2014, 2015
Girls Track: 1980, 1981, 1985*, 2000, 2009*, 2011, 2012, 2013
Boys Golf: 1975 (fall), 2006*, 2008