Enrollment
304
Illinois · 2024-25 NCES data
Other / mixed grade configuration · Ottawa, IL
Federal NCES profile for Jefferson Elem School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 41/100.
The verdict
Jefferson Elem School earns 41/100 on the Resource Investment Index, with class sizes near the Illinois median.
Jefferson Elem School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Jefferson Elem School ranks #5 of 6 schools in Ottawa, IL.
NCES ID 173030003136 Verify on NCES CCD record →
Enrollment
304
Illinois · 2024-25 NCES data
Teachers (FTE)
23.0
Federal CCD staff survey
Students per teacher
13.2:1
vs 14:1 Illinois avg
-6% vs state
How Jefferson Elem School compares with Illinois and U.S. medians
At or below state median
13.2:1 - 0.8 below the Illinois state median of 14:1, indicating smaller average class loads than typical schools in the state.
Jefferson Elem School is a mid-sized combined-grade school in Ottawa, Illinois, enrolling 304 students.
At 13.2:1, its student-teacher ratio sits close to the Illinois median, within a few percentage points of the 14:1 state norm, neither notably crowded nor notably small.
With 304 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 (64%) and Hispanic or Latino (23%) (diversity index 54/100).
Attendance runs somewhat below the norm, with 21.7% of students chronically absent per the 2021-22 civil-rights collection.
Among Ottawa's public schools, it stands alongside Wallace Elem School (420 students): Jefferson Elem School is smaller than that campus by headcount and runs leaner classes (13.2:1 vs 15:1).
Ottawa Esd 141 also operates Lincoln Elem School (387 students) and Mckinley Elem School (364 students) alongside Jefferson Elem 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
Jefferson Elem 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 | 13.2:1 | ▼ 6% | 14:1 | 15.7:1 |
| Enrollment | 304 | top 63% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
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.
Largest group: White at 63.5% of enrollment.
Simpson diversity index - at 53.6, Jefferson Elem School is more mixed than the Illinois school average of 38.9.
District-wide per-pupil expenditure for Ottawa Esd 141, which includes Jefferson Elem School.
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.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Lincoln Elem School | Larger | No free-lunch data | Similar S:T ratio |
| Mckinley Elem School | Similar size | No free-lunch data | Similar S:T ratio |
| Shepherd Middle School | Similar size | No free-lunch data | Lower S:T ratio |
| Central Intermediate School | Similar size | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Jefferson Elem School's own figures; each column derives from NCES Common Core of Data.
5 comparable other schools (grades Mixed) serving the same city.
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.
Next steps
Verify locally before acting on Jefferson Elem School's federal record.
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.
Jefferson Elem School has 304 students enrolled. It is a public school in Ottawa, IL.
The student-teacher ratio at Jefferson Elem School is 13.2:1, which is 6% lower than the Illinois average of 14:1 and 16% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
The largest demographic group at Jefferson Elem School is White at 63.5% of enrollment, in Ottawa, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 53.6/100.
Jefferson Elem School has a Resource Investment Index of 41/100 (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).
By Resource Investment Index, Jefferson Elem School ranks #5 of 6 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 schools in Ottawa on the city page.
Jefferson Elem School earns 41/100 on the Resource Investment Index, with class sizes near the Illinois median. 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.
Besides Jefferson Elem 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.
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.
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Last updated:
PlainSchools, “Jefferson Elem School, Ottawa IL.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/jefferson-elem-school-il-14/
You are welcome to quote these figures with attribution to PlainSchools and the underlying source. The URL above is stable.