Enrollment
339
Illinois · 2024-25 NCES data
Elementary school (grades K-5) · Ottawa, IL
Central Intermediate School
Federal NCES profile for Central Intermediate School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 43/100.
2024-25 NCES dataElementary school (grades K-5)NCES 173030003135
👥 S:T ratio 55
🌟 Gifted program 30
📋 Attendance 45
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Central Intermediate School earns 43/100 on the Resource Investment Index, with class sizes smaller than 79% of Illinois schools.
- #5 of 9
- public schools in Ottawa · Resource Index
- 43
- Resource Index · Typical
- 11.3:1
- small classes for Illinois
- 339
- students enrolled
Central Intermediate School has class sizes smaller than 79% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Central Intermediate School ranks #5 of 9 public schools in Ottawa, IL.
School address
District: Ottawa Esd 141 · Illinois
NCES ID 173030003135 Verify on NCES CCD record →
Teachers (FTE)
30.0
Federal CCD staff survey
Students per teacher
11.3:1
vs 14:1 Illinois avg
-19% vs state
Student-teacher ratio in context
How Central Intermediate School compares with Illinois and U.S. medians
What stands out at Central Intermediate School
Central Intermediate School is a mid-sized elementary school in Ottawa, Illinois, enrolling 339 students.
Class sizes run a bit leaner than typical: 11.3:1 puts it in the smaller third of Illinois schools by student-teacher ratio.
With 339 students, its enrollment sits close to the Illinois median campus size.
Its Resource Investment Index sits near the middle of the pack among 3,845 scored Illinois schools.
Its student body is led by White (73%) and Hispanic or Latino (19%) (diversity index 43/100).
Attendance runs somewhat below the norm, with 22.1% of students chronically absent per the 2021-22 civil-rights collection.
Ottawa Esd 141 also operates Lincoln Elem School (387 students) and Mckinley Elem School (364 students) alongside Central Intermediate 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 Central Intermediate School compares
Central Intermediate 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 | 11.3:1 | ▼ 19% | 14:1 | 15.7:1 |
| Enrollment | 339 | top 56% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
11.3:1
Leaner classes than 81% of US schools, among the more generously staffed nationally.
339
Bigger than 38% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
11.3:1
students per teacher
- 19% below state mean
Top 21% in Illinois - lower ratio than 79% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
22.1%
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
$15,797
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
35
in-school suspensions + 6 out-of-school
Suspension rate: 10.3 per 100 students. Combined in-school and out-of-school rate: 12.1 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 72.6%
Hispanic or Latino 18.9%
Two or More 4.4%
African American 2.7%
Asian 1.5%
Largest group: White at 72.6% of enrollment.
Student-body diversity index 43.4/100
Simpson diversity index - at 43.4, Central Intermediate School is more mixed than the Illinois school average of 38.9.
Programs
Funding & spending
District-wide per-pupil expenditure for Ottawa Esd 141, which includes Central Intermediate School.
$15,797
Per student
-7%
vs Illinois
Avg $17,042
-5%
vs U.S.
Avg $16,593
Revenue mix
Local 49.6%
State 39.0%
Federal 11.4%
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 Central Intermediate School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Lincoln Elem School | Similar size | No free-lunch data | Higher S:T ratio |
| Mckinley Elem School | Similar size | No free-lunch data | Higher S:T ratio |
| Shepherd Middle School | Similar size | No free-lunch data | Similar S:T ratio |
| Jefferson Elem School | Similar size | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Central Intermediate School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 387
- Students per teacher
- 12.9:1
- Resource Index
- 43/100
- Enrollment
- 364
- Students per teacher
- 14.6:1
- Resource Index
- 44/100
- Enrollment
- 353
- Students per teacher
- 11.4:1
- Resource Index
- 47/100
- Enrollment
- 304
- Students per teacher
- 13.2:1
- Resource Index
- 41/100
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 (~339 students)
Next steps
Verify locally before acting on Central Intermediate School's federal record.
- Compare Central Intermediate School against another school. Compare schools
- Ottawa Esd 141'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 Central Intermediate School
How many students attend Central Intermediate School?
Central Intermediate School has 339 students enrolled. It is an elementary school in Ottawa, IL.
What is the student-teacher ratio at Central Intermediate School?
The student-teacher ratio at Central Intermediate School is 11.3:1, which is 19% lower than the Illinois average of 14:1 and 28% 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 Central Intermediate School?
The largest demographic group at Central Intermediate School is White at 72.6% of enrollment, in Ottawa, IL.
What is the Resource Investment Index for Central Intermediate School?
Central Intermediate School has a Resource Investment Index of 43/100 (typical 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 Central Intermediate School rank among public schools in Ottawa?
By Resource Investment Index, Central Intermediate School ranks #5 of 9 public schools in Ottawa, 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 Ottawa on the city page.
Is Central Intermediate School a good school?
Central Intermediate School earns 43/100 on the Resource Investment Index, with class sizes smaller than 79% 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 Ottawa Esd 141?
Besides Central Intermediate School, Ottawa Esd 141 also operates Lincoln Elem School (387 students), Mckinley Elem School (364 students), and Shepherd Middle School (353 students). See the Ottawa Esd 141 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.