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St. Clair County

Illinois · Public K-12

Parents in St. Clair County researching K-12 options have 96 public schools to consider, with combined enrollment near 40,879 (52 elementary, 21 middle, and 21 high).

4-year change in St. Clair County

SY 2020-21 vs SY 2024-25
Total enrollment
40,879
+54 (+0%) vs SY 2020-21
School count
85
0 (0%) vs SY 2020-21
Source: NCES Common Core of Data, enrollment-weighted demographic averages

How St. Clair County ranks

Among counties
MeasureThis countyIn IllinoisIn the US
State test proficiency
ranked highest first
41.2%#39 of 88N/A
Enrollment
ranked largest first
40,879#8 of 89#269 of 2,745
Number of schools
ranked most first
85#6 of 89N/A
Students per teacher
ranked fewest first
14.4:1#73 of 89#1,557 of 2,655
Free or reduced-price lunch share
ranked highest first
54.3%#29 of 89#1,397 of 2,526
Diversity index
ranked most diverse first
63.6%#12 of 89#390 of 2,707
Counties need at least 3 schools and 1,000 students to be ranked. Test proficiency is ranked within the state only, since each state gives a different test. Each rank links to the full list.

St. Clair County school rankings

Largest schoolsAll rankings →
Residents
253,694
all ages · ACS 5-yr
Schools
96
31 districts
Enrollment
40,879
students · NCES CCD
Median income
$73,854
Above Illinois avg
Free/reduced lunch
54.3%
Above Illinois avg
Elementary
52
18,687 students
Middle
21
7,915 students
High
21
14,277 students
Combined / other
2
schools
LARGEST DISTRICT
Belleville Twp HSD 201
4,718 students · 31 districts in St. Clair County

County vs. school enrollment demographics

Left bar is the racial makeup of St. Clair County residents (Census ACS 5-year). Right bar is the enrollment-weighted makeup of public schools in the county (NCES CCD). NCES systematically under-reports Hispanic, Pacific Islander, and Native American enrollment for many schools; where the resident share is meaningful but the reported school share is zero, we mark the school bar "not reported".

County residents
White
60%
Hispanic
5%
Black
28%
Asian
2%
Two or more
8%
Native American
0%
Pacific Islander
0%
School enrollment
White
44%
Hispanic
7%
Black
40%
Asian
1%
Two or more
7%
Native American
0%
Pacific Islander
0%
Bachelor's+
31.8%
adults 25+
Poverty rate
9.5%
ACS 5-year
Unemployment
6.0%
civilian labor
Median age
40
23.0% under 18

Test scores in St. Clair County

Latest 2024-25 ELA proficiency, 67 schools ranked. Illinois state average: 51.0%.

See all 67 schools in St. Clair County ranked by score →

All schools (96)

LargestA-ZTop rated
NameCityLevelGradesEnrollmentRating
Belleville High School-EastBellevilleHigh09-122,600·
O Fallon High SchoolO FallonHigh09-122,540·
Belleville High School-WestBellevilleHigh09-122,118·
Collinsville High SchoolCollinsvilleHigh09-121,956·
East St Louis Senior High SchoolEast Saint LouisHigh09-121,288·
Mascoutah High SchoolMascoutahHigh09-121,243·
Belle Valley SchoolBellevilleElementaryPK-08997·
Mascoutah Middle SchoolMascoutahMiddle06-08973·
Mascoutah Elem SchoolMascoutahElementaryPK-05853·
Scott Elem SchoolScott Air Force BaseElementaryPK-05852·
Cahokia High SchoolCahokiaHigh09-12850·
Freeburg Community High SchFreeburgHigh09-12689·
Whiteside Elem SchoolBellevilleElementaryPK-04680·
Fulton Jr High SchoolO FallonMiddle06-08667·
Amelia V Carriel Jr HighO FallonMiddle06-08664·
Marie Schaefer Elem SchoolO FallonElementaryPK-05598·
Delores Moye Elem SchoolO FallonElementaryPK-05595·
Wirth/Parks Middle SchoolCahokiaMiddle06-08571·
Abraham Lincoln Elem SchoolBellevilleElementaryKG-06542·
Smithton Elem SchoolSmithtonElementaryPK-08541·
Mason/Clark Middle SchEast Saint LouisMiddle05-08540·
Wyvetter Younge Sch of ExcellenceE Saint LouisElementaryKG-08534·
Freeburg Elem SchoolFreeburgMiddle03-08508·
Bluffview Elem SchoolDupoElementaryPK-06501·
Wolf Branch Elem SchoolSwanseaElementaryPK-04482·
Whiteside Middle SchoolBellevilleMiddle05-08475·
Estelle Kampmeyer Elem SchoolO FallonElementaryPK-05465·
Millstadt Consolidated SchoolMillstadtMiddle03-08453·
J Emmett Hinchcliffe Sr Elem SchO FallonElementaryPK-05452·
Union Elem SchoolBellevilleElementaryKG-06432·
Wingate Elementary SchoolShilohElementaryPK-05424·
Laverna Evans Elem SchoolO FallonElementaryPK-05421·
Katie Harper-Wright ElemEast Saint LouisElementaryPK-04418·
William Holliday Elem SchoolFairview HeightsElementaryPK-05418·
Ellis Elem SchoolBellevilleElementaryPK-03382·
Vivian Adams Early Child CtrEast Saint LouisElementaryPK-PK377·
West Jr High SchoolBellevilleMiddle07-08364·
Annette Officer ElementaryEast Saint LouisElementaryKG-04362·
East St Louis-Lincoln Middle SchEast Saint LouisMiddle05-08359·
James Avant Elementary SchoolWashington PkElementaryKG-05342·
Wolf Branch Middle SchoolSwanseaMiddle05-08341·
Caseyville Elementary SchoolCaseyvilleElementaryPK-04336·
Shiloh Middle SchoolShilohMiddle04-08331·
Dawn Elser Elementary SchoolO FallonElementaryPK-03330·
Dunbar Elem SchoolEast Saint LouisElementaryKG-04327·
High Mount Elem SchoolSwanseaElementaryPK-08325·
Illini Elem SchoolFairview HeightsElementaryPK-04315·
Westhaven ElementaryBellevilleElementaryKG-06313·
Lebanon Elem SchoolLebanonElementaryPK-05312·
Central Jr High SchoolBellevilleMiddle07-08308·
Joseph Arthur Middle SchoolO FallonMiddle04-08299·
Jefferson Elem SchoolBellevilleElementaryPK-06293·
Signal Hill Elem SchoolBellevilleElementaryPK-08291·
Maplewood Elem SchoolCahokiaElementaryPK-02290·
Lalumier Elem SchoolCentrevilleElementaryPK-03276·
Roosevelt Elem SchoolBellevilleElementaryKG-06272·
Huffman Elem SchoolCahokiaElementary03-05268·
Marissa Elem SchoolMarissaElementaryPK-06266·
Dupo High SchoolDupoHigh09-12259·
Grant Middle SchoolFairview HeightsMiddle05-08254·
Penniman Elem SchoolCahokiaElementary03-05250·
Elizabeth Morris Elem SchoolCahokiaElementaryKG-03246·
Millstadt Primary CenterMillstadtElementaryPK-02246·
Shiloh Elementary SchoolShilohElementaryPK-03245·
Freeburg Primary CenterFreeburgElementaryPK-02244·
Estelle Sauget School of ChoiceCahokiaElementaryPK-08240·
Douglas Elem SchoolBellevilleElementaryKG-06233·
New Athens ElemNew AthensElementaryPK-05229·
Marissa Jr & Sr High SchoolMarissaHigh07-12226·
Twin Echo Elem SchoolCollinsvilleElementaryKG-04222·
Lebanon High SchoolLebanonHigh06-12218·
Pontiac Jr High SchoolFairview HeightsMiddle06-08212·
Harmony Intermediate CenterBellevilleMiddle04-06207·
Washington SchoolBellevilleElementaryPK-PK192·
Franklin Elem SchoolBellevilleElementaryKG-06172·
New Athens High SchoolNew AthensHigh09-12164·
Henry Raab Elem SchoolBellevilleElementaryKG-06154·
Emge Junior High SchoolBellevilleMiddle07-08146·
Dupo Jr High SchoolDupoMiddle07-08124·
SIU Charter Sch of East St LouisEast Saint LouisHigh09-1299·
New Athens Jr HighNew AthensMiddle06-0895·
Lovejoy Elementary SchoolLovejoyElementaryPK-0567·
St Libory Elem SchoolSt LiboryElementaryKG-0865·
Lovejoy Technology AcademyLovejoyHigh09-1227·
Lovejoy Middle SchoolLovejoyMiddle06-0824·
ACDC PennimanCahokiaHigh06-120·
Belleville Twp HS-Night/Alt SchBellevilleHigh09-120·
Collinsville Area Career CtrCollinsvilleHigh11-120·
Ctr for Acad and VOCNL Excel CAVEBellevilleHigh09-120·
Gordon Bush Alt Sch for EducationE Saint LouisHigh05-120·
Hollywood HeightsCaseyvilleCombinedKG-120·
Innovative Pathways ProgramO FallonCombined04-120·
Saint Clair Co ROE Safe SchoolBellevilleHigh05-120·
St Clair Co Juv Detention CenterBellevilleHigh07-120·
PALSBellevilleElementaryM-M··
Pathways SchoolBellevilleElementaryM-M··

Cities in St. Clair County

Belleville26 schoolsO Fallon11 schoolsCahokia8 schoolsEast Saint Louis8 schoolsFairview Heights4 schoolsCollinsville3 schoolsDupo3 schoolsFreeburg3 schoolsLovejoy3 schoolsMascoutah3 schoolsNew Athens3 schoolsShiloh3 schoolsSwansea3 schoolsCaseyville2 schoolsE Saint Louis2 schoolsLebanon2 schoolsMarissa2 schoolsMillstadt2 schoolsCentreville1 schoolScott Air Force Base1 schoolSmithton1 schoolSt Libory1 schoolWashington Pk1 school

About St. Clair County

In Illinois, St. Clair County is a sizable county of about 253,694 residents. 96 public schools across the county educates about 40,879 students between them.

Stepping back, census numbers show typical household earnings sit around $73,854, roughly 32% of adults have completed at least a four-year degree, and the poverty rate is around 10%. That income level is 5% meaningfully above the Illinois median.

For a sense of the school types, St. Clair County covers 52 elementary schools (18,687 students), 21 middle schools (7,915), 21 high schools (14,277), and 2 combined or other schools.

Belleville Twp HSD 201 is the biggest district by enrollment, covering about 4,718 students across St. Clair County.

Over the past 4-year window. Combined enrollment now sits at 40,879 students, remained close to its prior level from the 40,825 reported in SY 2020-21.

On allk12, the community for St. Clair County discusses comparison threads between local schools and program reviews. Parents, students, and educators in the area can post or comment.

Frequently asked questions

How many K-12 schools serve St. Clair County?
There are 96 public K-12 schools in St. Clair County, Illinois, with a combined enrollment of about 40,879.
How many high schools are in St. Clair County?
St. Clair County, Illinois has 21 public high schools, serving approximately 14,277 students.
How many middle schools are in St. Clair County?
St. Clair County, Illinois has 21 public middle schools, serving approximately 7,915 students.
How many elementary schools are in St. Clair County?
St. Clair County, Illinois has 52 public elementary schools, serving approximately 18,687 students.
What is the largest school district in St. Clair County?
Belleville Twp HSD 201 is the largest school district in St. Clair County, serving approximately 4,718 students. The county contains 31 school districts overall.
What is the population of St. Clair County?
St. Clair County, Illinois has a population of approximately 253,694, with a median age of 40. About 23.0% of residents are under 18.
What is the median household income in St. Clair County?
Median household income in St. Clair County is $73,854, above the Illinois average of $70,291. About 9.5% of residents live below the federal poverty line.
How educated are residents of St. Clair County?
Approximately 31.8% of adults 25 and older in St. Clair County hold a bachelor's degree or higher, according to the Census ACS 5-year estimate.
What share of students in St. Clair County qualify for free or reduced lunch?
Roughly 54.3% of students in St. Clair County public schools qualify for free or reduced-price lunch, a common proxy for low-income enrollment. This is higher than the Illinois county average of 51.1%.
What is the student-teacher ratio in St. Clair County schools?
Across St. Clair County public schools, the enrollment-weighted student-teacher ratio is approximately 14.9 to 1.
DATA · Census ACS 5-year · NCES Common Core of Data