2014	High School
	College	Boom! Shakalaka
2013	High School	Dew & the Crew	Huntley H.S.
	College	Soundquake	Morton H.S.
2012	High School	The Sharp Set	Huntley H.S.
		The Quartic Quartet	Huntley H.S.
		Fox & the Hounds	Barrington H.S.
	College	No entrants
2011	High School	After Shave	Barrington H.S.
		Three Men & a Tenor	Barrington H.S.
	College	After Hours	Bradley University
2010	High School	Four of a Kind	Barrington H.S.
	College	After Hours	Bradley University
2009	High School	Measure 87	Mt. Zion H.S.
	College	After Hours	Bradley University
2008	High School	Measure 87	Mt. Zion H.S.
		Honey Crooners	Woodstock H.S.
	College	Nobody’s Afterthought	Illinois Wesleyan/U. Illinois
2007	High School	Interchangeable Parts	Mt. Zion H.S.
		Insegrity	Barrington H.S.
		Four Thought	Olympia H.S.
		Perfect Chordination	Elk Grove H.S.
	College	The Aboriginals	Illinois Wesleyan
		Roundabouts	U. of Illinois/Northern Iowa U.
		Harmony Revolution	Eastern Illinois/U. of Findlay
2006	High School	Young Guns	Glenbard West H.S.
		Honey Crooners	Woodstock H.S.
		3 Guys/Average Joe	Oswego H.S.
	College	Tesseract	U. of Illinois
		Out Of The Loop	Northwestern U./Roosevelt U.
		Roundabouts	U. of Illinois
2005	High School	Treblemakers	Barrington H.S.
		Manheim Rockets	Geneva H.S.
		3 Guys & A Melody	Barrington H.S.
		R.S.V.P.	Mt. Zion H.S.
	College	Tesseract	U. of Illinois
		Out Of The Loop	Northwestern U./Roosevelt U.
2004	High School	Euphoria	Decatur Eisenhower/Central A & M
		The Tetrachords	Barrington H.S.
		ACaFellas	Geneva H.S.
	College	No entrants
2003	High School	Harolds of Harmony	Barrington H.S.
		Out Of Time	Glenwood-Chatham H.S.
		Twisted Mississippi	Barrington H.S.
	College	Fourtunes Fools	Northwestern University
		Vocal Tonic	Northwestern/Illinois/Harper/Concordia
2002	High School	NaCl	Elk Grove H.S.
		Out Of Time	Glenwood-Chatham H.S.
		M.A.S.S. Harmony	Barrington H.S.
		Ain’t Clean Shaven	Springfield H.S.
	College	Fourtunes Fools	Northwestern University
2001	High School	M.A.S.S. Confusion	Barrington H.S.
	College	Vocal Tonic	Northwestern/Illinois/Harper/Concordia
		The Dateables	Northwestern University
		Bored Of Education	Millikin University
2000	High School	3 Pips & A Squeak	Glenwood Junior H.S.
		M.A.S.S. Confusion	Barrington H.S.
		Glenwood Ensemble	Glenwood H.S.
	College	Bored Of Education	Millikin University
		The Four Oceans	Bradley University
		Flying High	Quincy University
		Halo Four	Harper/DuPage/Elmhurst Colleges
1999	High School	Bored Of Education	Mt. Zion H.S.
		North Boone Quartet	North Boone H.S.
		Voices	Streamwood H.S.
		Blue Rain	Glenwood Junior H.S.
		Four Pack	Barrington H.S.
		Sons Of Harmony	Belleville West H.S.
	College	Parr For The Course	Eastern Illinois U./Mt. Zion H.S.
		Infinity	College of DuPage/Elk Grove H.S.
		Missing 55	Lincolnland Community College
1998	High School	Voices	Streamwood H.S.
		Four On The Floor	Maine West H.S.
		Mellow Fellows	Barrington H.S.
		Sonorous Sophomores	Barrington H.S.
		Bored Of Education	Mt. Zion H.S.
	College	Recently Delinquent Minors	North Central/Wheaton/College of DuPage
1997	High School	Top Shelf	Glenwood H.S.
		Peripheral Vision	Crystal Lake H.S.
		Senator Sound	Springfield H.S.
		Rivals In Harmony	Evanston/New Trier H.S.
	College	Academia Nuts	Iowa State U./Muscatine C.C./Muscatine H.S.
1996	High School	No entrants
	College	No entrants
1995	College	Academia Nuts	Iowa State University
1994	College	By Popular Demand	???
		Acafellas	???
1993	College	Heritage Station *
		* Competed out of district and went on to win college championship
Assuming first contests were held in 1993.