#-indicates regional tournament host.

Deerfield Supersectional

Deerfield Sectional (19 teams)
Amundsen
Antioch
Carmel
Cary-Grove
Crystal Lake Central
Crystal Lake South
Deerfield
Grayslake Central
#Grayslake North
#Lake Forest
Lakes
North Chicago
Northtown
Northside
Prairie Ridge
Roosevelt
Saint Viator
#Vernon Hills
Wauconda
One regional host needed in this sectional.

DePaul Sectional (18 teams)
Alcott (co-op)
Bulls
Business and Finance (co-op)
Clemente
#DeLaSalle
#DePaul 
Golder
Intrinsic 
Intrinsic-Downtown
Muchin
Noble Street 
Payton
Pritzker
St. Ignatius 
#Schurz
Speer
UIC
Westinghouse 
One regional host needed in this sectional.

Hinsdale South Supersectional

Belvidere Sectional (17 teams)

Sub-sectional A
Burlington Central
Harvard
#Hinckley-Big Rock (co-op)
Illinois Math and Science
#Kaneland
Plano
Sycamore
Woodstock
Woodstock North

Sub-sectional B
Belvidere
#Belvidere North
Boylan
Dixon
#Freeport
Pecatonica (co-op)
Rochelle
Sterling
 
Lemont Sectional (18 teams)
Elmwood Park
Fenton
Glenbard South
Hancock
#Hinsdale South
Kennedy
Lemont
#Mansueto
Montini
#Nazareth
Prosser
Resurrection
Ridgewood
#St. Francis
Solorio
Steinmetz
Trinity
Wheaton Academy

Kankakee Supersectional

Kankakee Sectional (18 teams)
Agricultural Science
Back of the Yards
Bogan
Bremen
Brooks
Crete-Monee
Englewood
Evergreen Park
Goode
#Kankakee 
Lindblom
Marian
Morgan Park
#Oak Forest
#Providence
#St. Laurence
Tinley Park
Washington 

Washington (Ill.) Sectional (17 teams)

Sub-sectional A
#Dunlap
East Peoria (co-op)
Galesburg
#Geneseo
Limestone
Notre Dame (Peoria)
Orion (co-op)
Richwoods

Sub-sectional B
Bloomington
#LaSalle-Peru
Metamora
Morris (co-op)
Morton
Ottawa
University (Normal)
Streator (co-op)
#Washington (Ill.) 

Triad Supersectional

Freeburg Sectional (17 teams)

Sub-sectional A
Centralia
#Charleston
Civic Memorial
Highland
Mascoutah
Mattoon
Richland County
Salem
#Troy (Triad)

Sub-sectional B
Anna-Jonesboro (co-op)
#Carbondale
Carterville (co-op)
Freeburg
Harrisburg (co-op)
Marion
Mt. Vernon
#Waterloo
 
Pleasant Plains Sectional (16 teams)

Sub-sectional A
#Glenwood
#Jacksonville
Jersey
Pleasant Plains (co-op)
Rochester
Southeast
Springfield

Sub-sectional B
Centennial
Champaign Central
Danville
Lincoln
Mahomet-Seymour)
Meridian (co-op)
Mt. Zion
#Urbana
Warrensburg-Latham (co-op)
One regional host needed in this sectional.