Enrollment
387
Illinois · 2024-25 NCES data
Elementary school (grades K-5) · Oswego, IL
Old Post Elementary School
Federal NCES profile for Old Post Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 56/100.
2024-25 NCES dataElementary school (grades K-5)NCES 173027002101
👥 S:T ratio 52
🌟 Gifted program 70
📋 Attendance 45
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Old Post Elementary School earns 56/100 on the Resource Investment Index, with class sizes smaller than 70% of Illinois schools.
- #5 of 6
- elementary schools in Oswego · Resource Index
- 56
- Resource Index · Higher
- 12.1:1
- small classes for Illinois
- 387
- students enrolled
Old Post Elementary School has class sizes smaller than 70% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Old Post Elementary School ranks #5 of 6 elementary schools in Oswego, IL.
School address
Teachers (FTE)
32.0
Federal CCD staff survey
Students per teacher
12.1:1
vs 14:1 Illinois avg
-14% vs state
Student-teacher ratio in context
How Old Post Elementary School compares with Illinois and U.S. medians
What stands out at Old Post Elementary School
Old Post Elementary School is a mid-sized elementary school in Oswego, Illinois, enrolling 387 students.
Class sizes run a bit leaner than typical: 12.1:1 puts it in the smaller third of Illinois schools by student-teacher ratio.
With 387 students, its enrollment sits close to the Illinois median campus size.
Its Resource Investment Index lands in the upper third of 3,845 scored Illinois schools.
Its student body is led by White (60%) and Hispanic or Latino (25%) (diversity index 57/100).
Attendance runs somewhat below the norm, with 22.0% of students chronically absent per the 2021-22 civil-rights collection.
Among Oswego's elementary schools, it stands alongside Southbury Elem School (676 students): Old Post Elementary School is smaller than that campus by headcount and runs leaner classes (12.1:1 vs 16.1:1).
Cusd 308 also operates Oswego High School (2,870 students) and Oswego East High School (2,758 students) alongside Old Post Elementary School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Old Post Elementary School compares
Old Post Elementary 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 | 12.1:1 | ▼ 14% | 14:1 | 15.7:1 |
| Enrollment | 387 | top 47% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.1:1
Leaner classes than 75% of US schools, among the more generously staffed nationally.
387
Bigger than 45% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
12.1:1
students per teacher
- 14% below state mean
Top 30% in Illinois - lower ratio than 70% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
22.0%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$16,181
per pupil, district-wide
- below Illinois avg of $17,042
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
4
in-school suspensions + 6 out-of-school
Suspension rate: 1.0 per 100 students. Combined in-school and out-of-school rate: 2.6 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 59.7%
Hispanic or Latino 25.3%
African American 5.7%
Two or More 5.4%
Asian 3.9%
Largest group: White at 59.7% of enrollment.
Student-body diversity index 57.2/100
Simpson diversity index - at 57.2, Old Post Elementary School is more mixed than the Illinois school average of 38.9.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Cusd 308, which includes Old Post Elementary School.
$16,181
Per student
-5%
vs Illinois
Avg $17,042
-2%
vs U.S.
Avg $16,593
Revenue mix
Local 47.8%
State 45.6%
Federal 6.5%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Old Post Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Oswego High School | Larger | No free-lunch data | Higher S:T ratio |
| Oswego East High School | Larger | No free-lunch data | Higher S:T ratio |
| Traughber Jr High School | Larger | No free-lunch data | Higher S:T ratio |
| Thompson Jr High School | Larger | No free-lunch data | Higher S:T ratio |
| Lakewood Creek Elementary | Larger | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Old Post Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,870
- Students per teacher
- 16.1:1
- Resource Index
- 47/100
- Enrollment
- 2,758
- Students per teacher
- 16.2:1
- Resource Index
- 44/100
- 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
Similar elementary schools in Oswego
5 comparable elementary schools (grades K-5) serving the same city.
Southbury Elem School
Standard public school
676 students 16.1:1 students per teacher
Fox Chase Elementary School
Standard public school
661 students 16.1:1 students per teacher
Prairie Point Elem School
Standard public school
455 students 15.7:1 students per teacher
Churchill Elem School
Standard public school
425 students 13.3:1 students per teacher
Hunt Club Elem
Standard public school
357 students 8.7:1 students per teacher
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Illinois, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~387 students)
Similar student-teacher ratio (~12.1:1)
Next steps
Verify locally before acting on Old Post Elementary School's federal record.
- Compare Old Post Elementary School against another school. Compare schools
- Cusd 308's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Old Post Elementary School
How many students attend Old Post Elementary School?
Old Post Elementary School has 387 students enrolled. It is an elementary school in Oswego, IL.
What is the student-teacher ratio at Old Post Elementary School?
The student-teacher ratio at Old Post Elementary School is 12.1:1, which is 14% lower than the Illinois average of 14:1 and 23% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Old Post Elementary School?
The largest demographic group at Old Post Elementary School is White at 59.7% of enrollment, in Oswego, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 57.2/100.
What is the Resource Investment Index for Old Post Elementary School?
Old Post Elementary School has a Resource Investment Index of 56/100 (higher reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Old Post Elementary School rank among elementary schools in Oswego?
By Resource Investment Index, Old Post Elementary School ranks #5 of 6 elementary 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 elementary schools in Oswego on the city page.
Is Old Post Elementary School a good school?
Old Post Elementary School earns 56/100 on the Resource Investment Index, with class sizes smaller than 70% of Illinois schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Cusd 308?
Besides Old Post Elementary School, Cusd 308 also operates Oswego High School (2,870 students), Oswego East High School (2,758 students), and Traughber Jr High School (1,070 students). See the Cusd 308 district page for the complete list.
Related tools
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, or report a data error. Data current as of June 2026.