1916-17 state champion Springfield High School basketball team (Courtesy State Journal-Register)
This entry has been updated through 2019 and also to correct the omission of two championships won by teams from Pleasant Plains High School. Thanks to Mike Barlow (see comments) for pointing out the omissions.
GIRLS
Cross-country
Sacred Heart-Griffin High School, 2007-08 (Class 2A)
Springfield High School, 2009-10 (2A)
Golf
SHG, 1995-96
Rochester High School, 2015-16 (A)
Soccer
Rochester High School, 2007-08 (A)
Glenwood High School, 2012-13 (2A)
Rochester High School, 2014-15 (A)
Rochester High School, 2015-16 (2A)
Softball
Williamsville High School, 1994-95 (A)
Glenwood High School, 2014 (3A)
Track & field
Southeast High School, 1972-73
Rochester, 1993-94 (A)
SEHS, 2009-10 (2A)
SEHS, 2010-11 (2A)
SEHS, 2011-12 (2A)
SEHS, 2012-13 (2A)
Volleyball
Pleasant Plains High School, 2018-19 (2A)
BOYS
Baseball
Griffin High School 1963-64
Griffin, 1986-87 (Class 2A)
Glenwood, 1995-96 ((2A)
Pleasant Plains, 1999-2000 (A)
Glenwood, 2009-10 (3A)
Pleasant Plains, 2013-14 (2A)
Cross country
Glenwood, 2018-19 (2A)
Basketball
Springfield 1916-17
SHS, 1934-35
SHS, 1958-59
Lanphier High School, 1982-83 (2A)
Pleasant Plains, 1999-2000 (A)
Pleasant Plains, 2001-02 (A)
Football
Glenwood, 1998 (4A)
Sacred Heart-Griffin High School, 2005 (5A)
SHG, 2006 (5A)
SHG, 2008 (6A)
Rochester High School, 2010 (4A)
Rochester, 2011 (4A)
Rochester, 2012 (4A)
Rochester, 2013 (4A)
SHG, 2013 (5A)
Rochester, 2014 (4A
SHG, 2014 (5A)
Rochester, 2016 (4A)
Rochester, 2017 (4A)
Williamsville High School, 2019 (3A)
Rochester, 2019 (5A)
Golf
SHG, 1978-79 (2A)
SHG, 1979-80 (2A)
Rochester, 1999-2000 (A)
Soccer
SHS, 1997-98 (A)
SHG, 1998-99 (A)
SHG, 2002-03 (A)
Glenwood, 2005-06 (2A)
Track and field
New Berlin High School, 2015-16 (A)
Source: Illinois High School Association
See also: Illinois High School Association state champions (individual)
Original content copyright Sangamon County Historical Society. You are free to republish this content as long as credit is given to the Society.
I want to note a couple of Championships omitted from this list, both of which belong to Pleasant Plains. They defeated Herrin 50-47 in OT to win the 2001-02 Class A Boys Basketball title. In 2013-14, they won the Class 2A Baseball title in a rain-shortened 5 inning contest against Byron, winning 7-1.
Mr. Barlow: Thanks very much for the corrections. I apparently missed those the first time I put this list together back in 2015. I’ll make the corrections (and credit you for catching the errors). And it looks like I better go back over all the decades to make sure I didn’t leave any others out.