Regular local school district · St. Clair County
O Fallon Twp HSD 203 School District, IL: schools, enrollment and spending
O Fallon Twp HSD 203 School District runs 1 public school with 2,540 students in grades 9 to 12. Its ratio of 16.4 students per teacher is 2.7 higher than the Illinois figure of 13.7.Listed in NCES data as "O Fallon Twp HSD 203".
At a glance
- Schools
- 1
- Students
- 2,540
- Teachers (FTE)
- 155
- Students per teacher
- 16.4
- IL: 13.7 · US: 15.3
- Address
- 600 S Smiley St, O Fallon, IL 62269
- Phone
- (618)632-3507
- County
- St. Clair County
- Locale
- Suburb: Large
- Grades offered
- 9 to 12
- Agency type
- Regular local school district
- NCES district ID
- 1729790
- State district ID
- IL-50-082-2030-17
- Total staff (FTE)
- 443
- School counselors (FTE)
- 7.0About 363 students per counselor.
- School administrators (FTE)
- 10.0
Students per teacher compared
This district16.4
Illinois13.7
United States15.3
2020 finance data
From the F-33 School District Finance Survey for fiscal year 2020, in nominal dollars. Enrollment used for per-pupil figures is the finance survey count (2,511), which can differ from 2024-25 enrollment.
- Total revenue
- $45.7 million
- Federal revenue
- $1.8 million
- State revenue
- $20.2 million
- Local revenue
- $23.7 million
- Total spending
- $41.4 million
- Spending per pupil
- $16,490
- Salaries
- $16.7 million40.2% of total spending.
- Long-term debt (end of year)
- $27.3 million
Where revenue came from
- Federal: 3.9%
- State: 44.3%
- Local: 51.8%
Illinois overall
- Federal: 7.7%
- State: 39.1%
- Local: 53.2%
Spending per pupil compared
This district$16,490
Illinois$20,743
United States$16,826
Schools in O Fallon Twp HSD 203 School District
By level: 1 high. A CEP school serves free meals to all students.
| O Fallon High School | High | 9 to 12 | 2,540 | 16.4 |
Nearby and related
Other districts in St. Clair County
- Belleville Twp HSD 201 School District 4,718 students
- East St Louis SD 189 4,646 students
- Mascoutah CUD 19 School District 4,345 students
- O Fallon CCSD 90 School District 3,862 students
- Belleville SD 118 3,275 students
- Cahokia CUSD 187 2,991 students
- Whiteside SD 115 1,155 students
- Belle Valley SD 119 997 students
- Comm Unit School District No 196 884 students
- Wolf Branch SD 113 823 students
- Freeburg CCSD 70 School District 752 students
- Harmony Emge SD 175 735 students
- Millstadt CCSD 160 School District 699 students
- Freeburg CHSD 77 School District 689 students
- Pontiac-W Holliday SD 105 630 students
More in Illinois
Source: NCES Common Core of Data 2024-25 and F-33 finance 2020, via the Urban Institute Education Data Portal. Last reviewed October 2026. Finance figures are 2020 finance data in nominal dollars, not adjusted for inflation. Blank values are not available, not applicable or suppressed in the source. See the methodology.