allk12 · Rankings · Most diverse · Illinois · St. Clair County · High schools

The most racially diverse public high schools in St. Clair County, Illinois

Across St. Clair County, Illinois, 11 public high schools are ranked here, ranked by the diversity index, the chance that two students picked at random belong to different racial or ethnic groups. Collinsville High School leads the list at 62.6%, against a median of 44.4% across the ranked schools.

Use the search box to find a specific school within this ranking, sort by any column, or export the full list. Built from NCES and state data for 2024-25.

Schools ranked

St. Clair County, Illinois

Top Diversity index

62.6%

Median Diversity index

44.4%

MOST DIVERSE · ST. CLAIR COUNTY, ILLINOIS

#	School	City	Students	Diversity index	% White	% Black	% Hispanic	% Asian
1	Collinsville High School	Collinsville, IL	1,956	62.6%	52.6%(1,028)	13.8%(271)	27.6%(539)	0.4%(7)
2	Belleville High School-East	Belleville, IL	2,600	61.6%	35.9%(933)	49.7%(1,292)	4.9%(127)	1.7%(45)
3	Belleville High School-West	Belleville, IL	2,118	60.1%	43.3%(918)	45.3%(960)	5.8%(122)	0.4%(9)
4	O Fallon High School	O Fallon, IL	2,540	59.0%	59.0%(1,499)	20.4%(518)	8.1%(205)	2.5%(63)
5	Mascoutah High School	Mascoutah, IL	1,243	52.5%	66.0%(821)	10.5%(130)	10.2%(127)	2.1%(26)
6	Lebanon High School	Lebanon, IL	218	44.4%	72.5%(158)	16.1%(35)	5.0%(11)	0.9%(2)
7	Dupo High School	Dupo, IL	259	31.7%	81.8%(212)	3.5%(9)	5.4%(14)	0.0%(0)
8	Marissa Jr & Sr High School	Marissa, IL	226	25.5%	85.8%(194)	1.8%(4)	5.3%(12)	0.0%(0)
9	Cahokia High School	Cahokia, IL	850	20.0%	2.8%(24)	89.2%(758)	2.9%(25)	0.0%(0)
10	Freeburg Community High School	Freeburg, IL	689	17.2%	90.9%(626)	1.2%(8)	2.8%(19)	1.4%(10)
11	East St Louis Senior High School	East Saint Louis, IL	1,288	11.3%	1.8%(23)	94.1%(1,212)	2.7%(35)	0.0%(0)

Page 1 of 1 · top 11 of 11 ranked. NCES + state assessment data, 2024-25.↓ Download full CSV

All schools in St. Clair County →

Most diverse rankings at a wider scope

All Illinois Nationwide

Other rankings for St. Clair County, Illinois

Largest Lowest ratio Highest proficiency Fastest growing Highest poverty Lowest poverty Highest ratio Lowest proficiency Most Hispanic Most Black Most White Most Asian Best in science Most Native American Most Pacific Islander Most multiracial Most Hispanic (count)Most Black (count)Most White (count)Most Asian (count)Most Native American (count)Most Pacific Islander (count)Most multiracial (count)Smallest Most male Most female

All ranking categories →

DATA NOTICE

allk12 is independent and not affiliated with, endorsed by, or sponsored by NCES, the US Census Bureau, any state education agency or assessment program, or any other government agency. Source data is compiled from public records and provided "as is," without warranty of accuracy or completeness. You rely on it, and any analysis derived from it, at your own risk. See the full disclaimer.