- Enrollment
- 2,758
- Students per teacher
- 16.2:1
- Resource Index
- 44/100
High school (grades 9-12) · Oswego, IL
Oswego High School
Federal NCES profile for Oswego High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 47/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 173027003132
👥 S:T ratio 36
🌟 Gifted program 70
🎓 Counselors 36
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Oswego High School earns 47/100 on the Resource Investment Index, with class sizes larger than 80% of Illinois schools. It is also one of the largest schools in Illinois.
- #9 of 12
- public schools in Oswego · Resource Index
- 47
- Resource Index · Typical
- 16.1:1
- large classes for Illinois
- 2,870
- students enrolled
Oswego High School has class sizes larger than 80% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Oswego High School ranks #9 of 12 public schools in Oswego, IL.
School address
NCES CCD universe card
School universe 173027003132 · Oswego, IL High · LARGE · TRAD
2,870 enr · 16.1:1 · RII 47
Nearest enrollment peer: Oswego East High School (2,758 students)
Resource Investment Index #9 of 12 public schools in Oswego. NCES Common Core of Data stamps for this campus. Read with this school → · District book → · Illinois schools → · Find another →
Oswego High School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- This school
Oswego High School
2,870 students
- Oswego East Hi
Oswego East High School
2,758 students
- Traughber Jr H 1,070
Traughber Jr High School
1,070 students
- Thompson Jr Hi 832
Thompson Jr High School
832 students
- Lakewood Creek 767
Lakewood Creek Elementary
767 students
- Murphy Junior 700
Murphy Junior High School
700 students
What this shows Oswego High School reports 2,870 students on the CCD universe file.
How Oswego High School compares
Oswego High School on the metrics families compare, against Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 16.1:1 | ▲ 15% | 14:1 | 15.7:1 |
| Enrollment | 2,870 | top 1% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.1:1
Leaner classes than 37% of US schools, a middle-of-the-pack class size.
2,870
Bigger than 99% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
16.1:1
students per teacher
- 15% above state mean
Top 80% in Illinois - lower ratio than 20% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Funding equity
$16,904
per pupil, district-wide
- below Illinois avg of $18,196
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors9.0 FTE
Per 319 students, the combined health-and-guidance staffing load for this school.
Discipline context
170
in-school suspensions + 131 out-of-school
Suspension rate: 5.9 per 100 students. Combined in-school and out-of-school rate: 10.5 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 48.8%
Hispanic or Latino 31.4%
African American 11.3%
Two or More 4.5%
Asian 3.7%
American Indian / Alaska Native 0.2%
Largest group: White at 48.8% of enrollment.
Student-body diversity index 64.7/100
Simpson diversity index - at 64.7, Oswego High School is more mixed than the Illinois school average of 38.9.
Programs
AP courses offered 28
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Cusd 308, which includes Oswego High School.
$16,904
Per student
-7%
vs Illinois
Avg $18,196
-4%
vs U.S.
Avg $17,658
Revenue mix
Local 47.8%
State 45.6%
Federal 6.5%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2022-23 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Oswego High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Oswego East High School | Similar size | No free-lunch data | Similar S:T ratio |
| Traughber Jr High School | Smaller | No free-lunch data | Similar S:T ratio |
| Thompson Jr High School | Smaller | No free-lunch data | Similar S:T ratio |
| Lakewood Creek Elementary | Smaller | No free-lunch data | Higher S:T ratio |
| Murphy Junior High School | Smaller | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Oswego High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,070
- Students per teacher
- 17.5:1
- Resource Index
- 51/100
- Enrollment
- 832
- Students per teacher
- 15.7:1
- Resource Index
- 42/100
- Enrollment
- 767
- Students per teacher
- 20.2:1
- Resource Index
- 52/100
- Enrollment
- 700
- Students per teacher
- 14.3:1
- Resource Index
- 52/100
Similar high schools in Oswego
1 comparable high schools (grades 9-12) serving the same city.
Nationwide high schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~2,870 students)
Similar student-teacher ratio (~16.1:1)
Frequently asked questions about Oswego High School
How many students attend Oswego High School?
Oswego High School has 2,870 students enrolled. It is a high school in Oswego, IL.
What is the student-teacher ratio at Oswego High School?
The student-teacher ratio at Oswego High School is 16.1:1, which is 15% higher than the Illinois average of 14:1 and 3% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Oswego High School?
The largest demographic group at Oswego High School is White at 48.8% of enrollment, in Oswego, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 64.7/100.
What is the Resource Investment Index for Oswego High School?
Oswego High School has a Resource Investment Index of 47/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, gifted-program reporting, counselor availability. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Oswego High School rank among public schools in Oswego?
By Resource Investment Index, Oswego High School ranks #9 of 12 public schools in Oswego, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Oswego on the city page.
What other schools are in Cusd 308?
Besides Oswego High School, Cusd 308 also operates Oswego East High School (2,758 students), Traughber Jr High School (1,070 students), and Thompson Jr High School (832 students). See the Cusd 308 district page for the complete list.
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error. Data current as of August 2026.