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O Fallon High School

O Fallon, Illinois · Grades 9 to 12 · O Fallon Twp HSD 203

Public school
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About O Fallon High School

Located in O Fallon, Illinois, O Fallon High School is a public school for grades 9 through 12. It reported 2,540 students in 2024-25. With about 155.5 full-time-equivalent teachers, that works out to roughly 16.3 students per teacher. It is part of O Fallon Twp HSD 203 School District. The surrounding area is classified as a suburb of a large metro area, in St. Clair County. Families comparing options will find 23 other schools within 5 miles.

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School facts

Address600 S Smiley St, O Fallon, IL 62269
Phone(618) 632-3507
School districtO Fallon Twp HSD 203
Grades9 to 12
Students (2024-25)2,540
Teachers (full-time equivalent, 2024-25)155.5
Students per teacher16.3
Charter schoolNo
School typeRegular
LevelHigh
Locale (NCES)Suburb, large, St. Clair County

Source: NCES Common Core of Data (CCD), 2024-25 public school directory and membership files (NCES school ID 172979003090). Details may have changed since the survey. Schools can update them by claiming this profile.

Nearby schools

Laverna Evans Elem SchoolPublic · Grades PreK to 5O Fallon · 0.6 miMarie Schaefer Elem SchoolPublic · Grades PreK to 5O Fallon · 0.7 miFirst Baptist AcademyPrivate, Baptist · Grades K to 12O Fallon · 0.7 miEstelle Kampmeyer Elem SchoolPublic · Grades PreK to 5O Fallon · 0.8 miAmelia V Carriel Jr HighPublic · Grades 6 to 8O Fallon · 1.3 miJ Emmett Hinchcliffe Sr Elem SchPublic · Grades PreK to 5O Fallon · 1.4 miShiloh Middle SchoolPublic · Grades 4 to 8Shiloh, IL · 1.7 miShiloh Elementary SchoolPublic · Grades PreK to 3Shiloh, IL · 2.1 mi

The 8 closest public, charter and private schools by straight-line distance, from NCES location data. Listings here are never paid.

Frequently asked questions

What grades does O Fallon High School serve?

O Fallon High School serves grades 9 through 12.

How many students attend O Fallon High School?

O Fallon High School reported 2,540 students in 2024-25, according to the NCES Common Core of Data.

What is the student-teacher ratio at O Fallon High School?

About 16.3 students per full-time-equivalent teacher, based on 2,540 students and 155.5 teachers in federal data.

Is O Fallon High School a public or charter school?

O Fallon High School is a traditional public (non-charter) school.

What school district is O Fallon High School in?

O Fallon High School is part of O Fallon Twp HSD 203 School District.

Where is O Fallon High School located?

O Fallon High School is at 600 S Smiley St, O Fallon, IL 62269. The phone number is (618) 632-3507.

How many other schools are near O Fallon High School?

There are 23 other schools within 5 miles of O Fallon High School in our directory.

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Other public and charter schools in O Fallon

All schools in O Fallon, IL

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