| 
| 2023 Class 8-4A Regional Assignments |  
| 
| Sectional 1 @ Eisenhower Middle School
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| Host: Rockford Eisenhower Date: Wednesday, December 6, 2023
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| 
| Regional 1 | BRACKET |  
| Plano Rockford Eisenhower
 Rockford Flinn
 Rockford Lincoln
 Rockford RESA
 Rockford West
 
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| Regional 2 | BRACKET |  
| Arlington Heights South Arlington Heights Thomas
 Barrington Prairie
 Barrington Station
 Lake Zurich North
 Lake Zurich South
 Vernon Hills Hawthorn North
 Vernon Hills Hawthorn South
 
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| Sectional 2 @ Humphrey Middle School
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| Host: Bolingbrook Humphrey Date: Wednesday, December 6, 2023
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| 
| Regional 3 | BRACKET |  
| Homer Glen Homer Lemont Old Quarry
 Maywood Irving
 Melrose Park Stevenson
 Prospect Heights MacArthur
 Summit Heritage
 Willowbrook Westview Hills
 
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| Regional 4 | BRACKET |  
| Bolingbrook Brooks Bolingbrook Humphrey
 Bolingbrook Jane Addams
 Cicero Unity
 Romeoville Lukancic
 Romeoville Martinez
 Woodridge Jefferson
 
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| Sectional 3 @ Chicago Heights MS-Spartan Arena
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| Host: Chicago Heights MS Date: Wednesday, December 6, 2023
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| 
| Regional 5 | BRACKET |  
| Calumet City Dolton 149 Chicago Heights MS
 Harvey Brooks
 Homewood Hart
 Lansing Memorial
 Phoenix Coolidge
 
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| Regional 6 | BRACKET |  
| Flossmoor Parker Frankfort Hickory Creek
 Frankfort Summit Hill
 Markham Prairie-Hills
 Matteson Colin Powell
 Matteson Huth   
 (Co-op)
 
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| Sectional 4 @ Shepherd Middle School
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| Host: Ottawa Shepherd Date: Wednesday, December 6, 2023
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| 
| Regional 7 | BRACKET |  
| Joliet Gompers Lockport Oak Prairie
 Manhattan
 Mokena
 New Lenox Liberty
 New Lenox Martino
 
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| Regional 8 | BRACKET |  
| Joliet Dirksen Joliet Hufford
 Joliet Washington
 Minooka
 Ottawa Shepherd
 Shorewood Troy
 
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 | IESA Girls Basketball 2023 Class 8-4A Regional Assignments |  | 
| Sectional 5 @ Mahomet-Seymour JH
 |  
| Host: Mahomet-Seymour Date: Wednesday, December 6, 2023
 |  
| 
| Regional 9 | BRACKET |  
| Bourbonnais UGC Bradley Central
 Coal City
 Kankakee JHS
 Park Forest Michelle Obama STA
 Steger Columbia
 University Park Crete Monee
 
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| Regional 10 | BRACKET |  
| Champaign Edison Champaign Franklin   
 (Co-op)
 Champaign Jefferson
 Danville North Ridge
 Mahomet-Seymour
 Rantoul Eater
 Urbana MS
 
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| Sectional 6 @ Macomb Middle School
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| Host: Macomb Date: Wednesday, December 6, 2023
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| 
| Regional 11 | BRACKET |  
| Bloomington Evans Bloomington JHS
 Morton JHS
 Normal Chiddix
 Normal Kingsley
 Normal Parkside
 
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| Regional 12 | BRACKET |  
| Dunlap MS Dunlap Valley MS
 East Peoria Central
 Galesburg JHS
 Macomb
 Pekin Broadmoor
 Pekin Edison
 
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| Sectional 7 @ Glenwood Middle School
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| Host: Chatham Glenwood Date: Wednesday, December 6, 2023
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| 
| Regional 13 | BRACKET |  
| Charleston Decatur Stephen Decatur
 Effingham JHS
 Mattoon
 Mt. Zion
 Rochester
 Taylorville JHS
 
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| Regional 14 | BRACKET |  
| Chatham Glenwood Jacksonville MS
 Quincy
 Springfield Franklin
 Springfield Grant
 Springfield Jefferson
 Springfield Washington   
 (Co-op)
 
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| Sectional 8 @ Triad Middle School
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| Host: St. Jacob Triad Date: Wednesday, December 6, 2023
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| 
| Regional 15 | BRACKET |  
| Alton Bethalto Trimpe
 Collinsville
 Edwardsville Liberty
 Edwardsville Lincoln
 Granite City Coolidge
 Jerseyville Community
 
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| Regional 16 | BRACKET |  
| Cahokia Wirth East St. Louis Clark   
 (Co-op)
 Highland MS
 Mascoutah
 O'Fallon Carriel
 O'Fallon Fulton
 St. Jacob Triad
 
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 Class HistoryThe IESA sanctioned girls basketball in 1979. There was one class of girls basketball until 1986 when the activity was split into 7th and 8th grade classes. From 1990-2005, the Association adopted the format of 7th and 8th grade play based upon a school's enrollment (7A, 7AA, 8A and 8AA). Starting in 2006, the Association adopted a four class system in each grade level (7-1A, 7-2A, 7-3A, 7-4A, 8-1A, 8-2A, 8-3A and 8-4A).  The current classification system assigns 25% of the schools to each of the four classes. How Class Split is Determined |