SchoolRow
#125

O Fallon High School

O Fallon, IL · O Fallon Twp HSD 203

Regular public school · Grades 9 - 12 · Suburb, large

125th of 601 Illinois high schools statewide · better than 79% Declining

600 S Smiley St, O Fallon, IL 62269

(618)632-3507NCES ID 172979003090Directory 202324

2,559
Students
2023–24 enrollment
16.5:1
Student / teacher ratio
28%
Free / reduced-price lunch
low-income indicator
21.3%
Chronically absent
IL average 25%

SchoolRow ranks O Fallon High School 125th of 601 Illinois high schools for 2024–25, based on Illinois Report Card 2024–25 English and Math results — better than 79% of high schools statewide. Its statewide percentile went from 92th in 2019 to 79th in 2025 — declining.

Statewide percentile by year
25%50%75%79%201920202025no testing 2020–21

Percent meeting or exceeding the state standard, Illinois Report Card 2024–25

English Language Arts
O Fallon High School
62%
IL average
52%
Math
O Fallon High School
53%
IL average
38%
Science
O Fallon High School
59%
IL average
45%
English Language Arts over time O Fallon High School IL average
25%50%75%62%52%201920202025no testing 2020–21
Math over time O Fallon High School IL average
25%50%75%53%38%201920202025no testing 2020–21
Science over time O Fallon High School IL average
25%50%75%59%45%201920202025no testing 2020–21
ELA by race, over time
25%50%75%72%68%67%48%39%201920202025no testing 2020–21

Asian (last reported 2022) stops before 2025: IL suppresses a group once too few of its students are tested, so the line ends rather than the school having stopped testing.

Math by race, over time
25%50%75%73%66%47%40%23%201920202025no testing 2020–21
Science by race, over time
25%50%75%83%70%61%53%32%201920202025no testing 2020–21

Asian (last reported 2022) stops before 2025: IL suppresses a group once too few of its students are tested, so the line ends rather than the school having stopped testing.

Percent meeting or exceeding the state standard, by student race and ethnicity. Only groups IL reports for this school appear — small groups are suppressed at the source to protect student privacy, so a missing line means too few testers, not zero. Tap a group to compare it with the IL average for that same group.

Racial and ethnic breakdown of 2,559 students (202324, NCES) — history since 1988, with comparable seven-category changes from 2010

8%White59%Black22%9%
Hover the pie for details
categories changedHispanic 8%White 59%Black 22%Two or more races 9%90%9%19882023
GroupTrend20102023Change
White68.3%58.7% 9.6 pts
Black18.6%21.9% 3.3 pts
Two or more races5.6%8.6% 3.0 pts
Hispanic4.7%8.0% 3.3 pts
Asian2.2%2.7% 0.5 pts

NCES history for this school begins in 1988. Race categories changed by 2010: earlier data combines Asian and Pacific Islander students and does not consistently identify multiracial students. The chart retains that history, while the change table uses 2010 onward.

Typical home value $312K in zip 62269 as of 2026-05 · trend since 2004

$80K$160K$240K$320K$305K20042010201520202025

Data Provided by Zillow Group

See recently sold homes in 62269 on Zillow →

Closest same-level schools, with 2024–25 state rank · ▲▼ = points better or worse than O Fallon High School

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What school district is O Fallon High School in?

O Fallon High School is part of the O Fallon Twp HSD 203 district in O Fallon, Illinois.

Is O Fallon High School a good school?

SchoolRow ranks O Fallon High School 125th of 601 Illinois high schools (better than 79% statewide) based on 2024–25 test results (Illinois Report Card 2024–25).

What is the racial makeup of O Fallon High School?

White 59%, Black 22%, Two or more races 9%, Hispanic 8% (2,559 students, 2023–24).

How much do homes near O Fallon High School cost?

The typical home value in zip code 62269 is $312K as of 2026-05 (Zillow ZHVI).

Sources: state education department data (Illinois Report Card 2024–25, low-income, chronic absenteeism), National Center for Education Statistics via the Urban Institute (enrollment, demographics, staffing), Zillow Group (home values). Rankings are computed by SchoolRow from state English and Math results within grade level; they measure test performance, not everything that makes a school good.