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O Fallon High School

Public Grades 9-12
101st
SchoolDigger Rank ?
of 698 Illinois High Schools
Better than 86% of Illinois high schools
Summary

O Fallon High School is a public high school serving 2,559 students in grades 9-12 in O'Fallon, Illinois, which is part of the O Fallon Township High School District 203. The school consistently ranks among the top 100 high schools in Illinois, with a 4-star rating from SchoolDigger.

O Fallon High School stands out for its exceptional academic performance, with 62.2% of 11th-grade students proficient or better in ACT/English Language Arts, 53.1% in ACT/Mathematics, and 58.9% in ACT/Science - significantly outperforming the state averages. The school also maintains a high four-year graduation rate, ranging from 87.7% to 94.5% in recent years, and a low dropout rate of 0.8% to 2.7%. Additionally, the school demonstrates strong performance across diverse student subgroups, including female, male, Asian, African American, Hispanic, and White students, with the Hispanic student population ranking in the top 20-27 in the state.

Compared to nearby schools, Belleville High School-West and Collinsville High School have lower academic performance and statewide rankings, while Mascoutah High School is a strong performer, though still slightly behind O Fallon High School in overall rankings and ratings. Lebanon High School, a smaller school, has academic performance generally on par with or slightly below the state averages. O Fallon High School's sustained excellence and commitment to equity make it a standout in the region.

2,540
Students ?
16.3
Student/teacher ratio ?
$14,005
Per pupil spending ?
28.1%
Free/discounted lunch ?
 600 S Smiley St
       O Fallon, IL  62269-2316

(618) 632-3507

District: O Fallon Township HSD 203

Racial breakdown:

White:
59.0%
African American:
20.4%
Two or more races:
9.4%
more
 See top rated Illinois high schools

 Compare O Fallon High School to nearby high schools!
At a glance
Ranking trend: Declining — 92nd percentile in 2015 → 86th in 2025
Strengths
Test scores above the Illinois average (58% vs 48% meeting standards)
Ranks in the top 14% of Illinois high schools
94% graduate in 4 years — above the Illinois average (89%)
Worth a look
!Ranking has slipped — down 6 percentile points since 2015
!Some student groups rank well below the school's overall statewide standing
Students meeting standards (2024-2025) ?
This school58%
District avg58%
Illinois avg48%
101st of 698
Illinois public high schools ?
Top 14%▼ down 6 pts since 2015
From top 8% (2015) to top 14% (2025)
See the entire ranking list of Illinois High Schools →
SchoolDigger rating ?
117th of 811O Fallon Township HSD 203 among Illinois districts
Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankIllinois percentileRating
202581.6101 of 69885.5%★★★★☆
202484.791 of 69786.9%★★★★☆
202382.699 of 69985.8%★★★★☆
202283.497 of 69986.1%★★★★☆
202178.9118 of 68882.8%★★★★☆
201993.144 of 70193.7%★★★★★
201888.758 of 64791.0%★★★★★
201790.151 of 64292.1%★★★★★
201686.228 of 64395.6%★★★★★
201588.649 of 61492.0%★★★★★
201488.358 of 67091.3%★★★★★
201388.853 of 67092.1%★★★★★
201291.936 of 66594.6%★★★★★
201188.059 of 65591.0%★★★★★
201086.958 of 64391.0%★★★★★
200987.753 of 63291.6%★★★★★
200888.248 of 62492.3%★★★★★
200786.651 of 61291.7%★★★★★
200683.277 of 59687.1%★★★★☆
200588.934 of 59094.2%★★★★★
200490.329 of 59295.1%★★★★★
200381.578 of 58686.7%★★★★☆

African American

YearAvg scoreStatewide rankIllinois percentileRating
202566.983 of 32374.3%★★★★☆
202452.292 of 29969.2%★★★☆☆
202370.448 of 30184.1%★★★★☆
202270.250 of 29483.0%★★★★☆
202160.364 of 28177.2%★★★★☆
201973.249 of 29983.6%★★★★☆
201871.143 of 25383.0%★★★★☆

Asian

YearAvg scoreStatewide rankIllinois percentileRating
202548.594 of 14836.5%★★☆☆☆
202448.773 of 13746.7%★★☆☆☆
202274.935 of 14175.2%★★★★☆
201982.520 of 13084.6%★★★★☆
201866.545 of 13265.9%★★★☆☆

Disabled

YearAvg scoreStatewide rankIllinois percentileRating
202551.1163 of 49166.8%★★★☆☆
202450.0137 of 42968.1%★★★☆☆
202371.466 of 42884.6%★★★★☆

English Language Learner

YearAvg scoreStatewide rankIllinois percentileRating
202560.677 of 28472.9%★★★★☆

Female

YearAvg scoreStatewide rankIllinois percentileRating
202581.398 of 68585.7%★★★★☆
202487.877 of 66488.4%★★★★☆
202380.9102 of 65684.5%★★★★☆
202284.086 of 65886.9%★★★★☆
202173.5142 of 63977.8%★★★★☆
201991.845 of 66593.2%★★★★★
201886.258 of 62090.6%★★★★★

Hispanic

YearAvg scoreStatewide rankIllinois percentileRating
202582.147 of 36687.2%★★★★☆
202495.120 of 33694.0%★★★★★
202389.227 of 33391.9%★★★★★
202282.441 of 33587.8%★★★★☆
202182.438 of 31788.0%★★★★☆
201989.825 of 31792.1%★★★★★
201894.514 of 29195.2%★★★★★

Low Socio Economic Status

YearAvg scoreStatewide rankIllinois percentileRating
202561.2210 of 67268.8%★★★☆☆
202454.6237 of 63962.9%★★★☆☆
202364.3174 of 64473.0%★★★★☆
202250.9275 of 62656.1%★★★☆☆
202150.6244 of 61160.1%★★★☆☆
201979.568 of 63989.4%★★★★☆
201882.145 of 58592.3%★★★★★

Male

YearAvg scoreStatewide rankIllinois percentileRating
202578.5110 of 68583.9%★★★★☆
202478.4118 of 66882.3%★★★★☆
202381.499 of 66885.2%★★★★☆
202279.9104 of 66484.3%★★★★☆
202180.0102 of 65384.4%★★★★☆
201992.445 of 67593.3%★★★★★
201888.058 of 61990.6%★★★★★

Military Connected

YearAvg scoreStatewide rankIllinois percentileRating
202585.23 of 2588.0%★★★★★
202487.83 of 2387.0%★★★★★
202389.94 of 2281.8%★★★★☆
202290.62 of 2692.3%★★★★★
202189.54 of 2281.8%★★★★☆
201991.53 of 1984.2%★★★★☆

Multi-racial

YearAvg scoreStatewide rankIllinois percentileRating
202554.889 of 21157.8%★★★☆☆
202461.961 of 18266.5%★★★☆☆
202354.766 of 16359.5%★★★☆☆
202258.268 of 17060.0%★★★☆☆
202132.6100 of 16037.5%★★☆☆☆
201965.755 of 16566.7%★★★☆☆
201866.552 of 15466.2%★★★☆☆

Special Education

YearAvg scoreStatewide rankIllinois percentileRating
202533.0306 of 52741.9%★★☆☆☆
202430.9292 of 48239.4%★★☆☆☆
202341.3215 of 47654.8%★★★☆☆
202240.7220 of 49355.4%★★★☆☆
202147.5159 of 45364.9%★★★☆☆
201945.3166 of 47364.9%★★★☆☆
201857.494 of 37474.9%★★★★☆

White

YearAvg scoreStatewide rankIllinois percentileRating
202582.483 of 56485.3%★★★★☆
202485.473 of 55486.8%★★★★☆
202382.672 of 55787.1%★★★★☆
202285.069 of 56087.7%★★★★☆
202180.890 of 55383.7%★★★★☆
201994.530 of 55294.6%★★★★★
201889.448 of 54891.2%★★★★★
How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)
Military Connected (2025)88th percentile~ school
Hispanic (2025)87th percentile~ school
Female (2025)86th percentile~ school
White (2025)85th percentile~ school
Male (2025)84th percentile~ school
African American (2025)74th percentile-11 vs school
English Language Learner (2025)73rd percentile-13 vs school
Low Socio Economic Status (2025)69th percentile-17 vs school
Disabled (2025)67th percentile-19 vs school
Multi-racial (2025)58th percentile-28 vs school
Special Education (2025)42nd percentile-44 vs school
Asian (2025)36th percentile-49 vs school
By subject vs Illinois (2024-2025) ?
English Language Arts62%+10 vs state
Science59%+10 vs state
Mathematics53%+14 vs state

5.0
1 rating · 1 written review
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What people are saying
by a parent
Tuesday, January 15, 2019

Open Quote I am a former student and now have children in the school district. OFallon is by far the best district in the area Close Quote





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Frequently Asked Questions about O Fallon High School

In the 2024-25 school year, 2,540 students attended O Fallon High School.

Students at O Fallon High School are 59% White, 20% African American, 9% Two or more races, 8% Hispanic, 2% Asian.

O Fallon High School ranks 101st of 698 Illinois high schools. SchoolDigger rates this school 4 stars out of 5.


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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau, the Illinois Department of Public Health and the Illinois State Board of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.





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