Metro East Sun

St. Clair County schools welcomed 38,836 students in the 2023-24 school year, according to the Illinois State Board of Education.

This is a decrease of 2.7% from the previous school year, when there were 39,912 students enrolled in the county.

St. Clair County had the eighth highest enrollment numbers in the state.

Of all the students welcomed at the time, 51.5% identified as male, and 48.5% as female.

The most represented ethnicity among St. Clair County students was white, making up about 46.4% of all the students.

Within St. Clair County, O'Fallon High School had the highest enrollment in the school year, welcoming 2,510 students.

As of the 2023-24 school year, Illinois public schools enrolled approximately 1.85 million students across nearly 4,000 schools. There was roughly one teacher for every 15 students, slightly better than the national average of 1:16.

K-12 enrollment has been declining in Illinois for many years, reflecting the state's demographic changes. Between the 2019–20 and 2022–23 school years, Illinois public school enrollment declined from approximately 1.98 million to 1.85 million students, a decrease of about 127,000 students or 6.4%. This decline is significantly higher than the typical annual decreases of 0.5% to 1.5% observed in the preceding years, reflecting broader demographic shifts within the state.

School	City	Enrollment
Abraham Lincoln Elementary School	Belleville	468
Amelia V. Carriel Junior High School	O'Fallon	683
Annette Officer Elementary School	East St. Louis	325
Belle Valley School	Belleville	961
Belleville East High School	Belleville	2,380
Belleville West High School	Belleville	2,010
Bluffview Elementary School	Dupo	498
Cahokia High School	Cahokia	778
Caseyville Elementary School	Caseyville	325
Central Elementary School	O'Fallon	376
Central Junior High School	Belleville	338
Collinsville High School	Collinsville	1,928
Delores Moye Elementary School	O'Fallon	626
Douglas Elementary School	Belleville	276
Dunbar Elementary School	East St. Louis	358
Dupo High School	Dupo	248
Dupo Junior High School	Dupo	135
East St. Louis Senior High School	East St. Louis	1,138
East St. Louis-Lincoln Middle School	East St. Louis	391
Elizabeth Morris Elementary School	Cahokia	271
Ellis Elementary School	Belleville	328
Emge Junior High School	Belleville	149
Estelle Kampmeyer Elementary School	O'Fallon	468
Estelle Sauget School of Choice	Cahokia	249
Franklin Elementary School	Belleville	134
Freeburg Community High School	Freeburg	661
Freeburg Elementary School	Freeburg	520
Freeburg Primary Center	Freeburg	260
Fulton Junior High School	O'Fallon	663
Grant Middle School	Fairview Heights	238
Harmony Intermediate Center	Belleville	200
Helen Huffman Elementary School	Cahokia	273
Henry Raab Elementary School	Belleville	139
High Mount Elementary School	Swansea	320
Illini Elementary School	Fairview Heights	330
J. Emmett Hinchcliffe Senior Elementary School	O'Fallon	459
James Avant Elementary School	Washington Park	324
Jefferson Elementary School	Belleville	325
Joseph Arthur Middle School	O'Fallon	246
Katie Harper-Wright Elementary School	East St. Louis	378
Lalumier Elementary School	Centreville	266
Laverna Evans Elementary School	O'Fallon	379
Lebanon Elementary School	Lebanon	285
Lebanon High School	Lebanon	229
Lovejoy Elementary School	Lovejoy	74
Lovejoy Middle School	Lovejoy	28
Lovejoy Technology Academy	Lovejoy	26
Maplewood Elementary School	Cahokia	324
Marie Schaefer Elementary School	O'Fallon	674
Marissa Elementary School	Marissa	250
Marissa Junior and Senior High School	Marissa	237
Mascoutah Elementary School	Mascoutah	770
Mascoutah High School	Mascoutah	1,220
Mascoutah Middle School	Mascoutah	934
Mason-Clark Middle School	East St. Louis	582
Millstadt Consolidated School	Millstadt	455
Millstadt Primary Center	Millstadt	229
New Athens Elementary School	New Athens	233
New Athens High School	New Athens	149
New Athens Junior High School	New Athens	92
O'Fallon High School	O'Fallon	2,510
Penniman Elementary School	Cahokia	256
Pontiac Junior High School	Fairview Heights	210
Roosevelt Elementary School	Belleville	258
Scott Elementary School	Scott Air Force Base	800
Shiloh Elementary School	Shiloh	230
Shiloh Middle School	Shiloh	315
Signal Hill Elementary School	Belleville	280
Smithton Elementary School	Smithton	541
Southern Illinois University Charter School of East St. Louis	East St. Louis	117
St. Libory Elementary School	St. Libory	67
Twin Echo Elementary School	Collinsville	180
Union Elementary School	Belleville	396
West Junior High School	Belleville	387
Westhaven Elementary School	Belleville	417
Whiteside Elementary School	Belleville	655
Whiteside Middle School	Belleville	503
William Holliday Elementary School	Fairview Heights	397
Wingate Elementary School	Shiloh	453
Wolf Branch Elementary School	Swansea	443
Wolf Branch Middle School	Swansea	336
Wyvetter Younge School of Excellence	East St. Louis	472