- Enrollment
- 186
- Students per teacher
- 12.4:1
- Resource Index
- 53/100
Other / mixed grade configuration · Polo, IL
Centennial Elem School
Federal NCES profile for Centennial Elem School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 47/100.
2024-25 NCES dataOther / mixed grade configurationNCES 173210003358
👥 S:T ratio 35
🌟 Gifted program 30
🎓 Counselors 41
📋 Attendance 83
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Centennial Elem School earns 47/100 on the Resource Investment Index, with class sizes larger than 82% of Illinois schools.
- #3 of 3
- public schools in Polo · Resource Index
- 47
- Resource Index · Typical
- 16.3:1
- large classes for Illinois
- 294
- students enrolled
Centennial Elem School has class sizes larger than 82% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Centennial Elem School ranks #3 of 3 public schools in Polo, IL.
School address
CCD year-over-year · 2022-23 → 2023-24
+18 students YoY
Centennial Elem School grew from 279 students in 2022-23 to 297 in 2023-24 (+6.5%).
Teacher FTE added 18.6 → 19.2 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Growing CCD campus
+18 students YoY 173210003358 · Polo, IL Other · SMALL · TRAD
294 enr · 16.3:1 · RII 47
Nearest enrollment peer: Polo Comm High School (186 students)
Centennial Elem School grew from 279 students in 2022-23 to 297 in 2023-24 (+6.5%). Teacher FTE added 18.6 → 19.2 across the same CCD years. Read with this school → · District book → · Illinois schools → · Find another →
Centennial Elem School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- This school
Centennial Elem School
294 students
- Polo Comm High
Polo Comm High School
186 students
- Aplington Midd 114
Aplington Middle School
114 students
What this shows Centennial Elem School reports 294 students on the CCD universe file.
How Centennial Elem School compares
Centennial Elem School is a growing campus on CCD: ratios and free-lunch share vs Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 16.3:1 | ▲ 16% | 14:1 | 15.7:1 |
| Enrollment | 294 | top 65% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.3:1
Leaner classes than 36% of US schools, a middle-of-the-pack class size.
294
Bigger than 31% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Staffing depth
16.3:1
students per teacher
- 16% above state mean
Top 82% in Illinois - lower ratio than 18% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
6.8%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$14,818
per pupil, district-wide
- below Illinois avg of $18,196
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 294 students, the combined health-and-guidance staffing load for this school.
Discipline context
13
in-school suspensions + 3 out-of-school
Suspension rate: 4.4 per 100 students. Combined in-school and out-of-school rate: 5.4 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 90.5%
Hispanic or Latino 6.8%
Two or More 2.4%
African American 0.3%
Largest group: White at 90.5% of enrollment.
Student-body diversity index 17.6/100
Simpson diversity index - at 17.6, Centennial Elem School is less mixed than the Illinois school average of 38.9.
Programs
District finance for Polo Cusd 222 reports $14,818 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Centennial Elem School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Polo Comm High School | Smaller | No free-lunch data | Lower S:T ratio |
| Aplington Middle School | Smaller | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Centennial Elem School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 114
- Students per teacher
- 12.7:1
- Resource Index
- 58/100
Nationwide other 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 (~294 students)
Similar student-teacher ratio (~16.3:1)
Frequently asked questions about Centennial Elem School
How many students attend Centennial Elem School?
Centennial Elem School has 294 students enrolled. It is a public school in Polo, IL. CCD year-over-year: 279 (2022-23) → 297 (2023-24), up 18.
What is the student-teacher ratio at Centennial Elem School?
The student-teacher ratio at Centennial Elem School is 16.3:1, which is 16% higher than the Illinois average of 14:1 and 4% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Centennial Elem School?
The largest demographic group at Centennial Elem School is White at 90.5% of enrollment, in Polo, IL.
What is the Resource Investment Index for Centennial Elem School?
Centennial Elem School has a Resource Investment Index of 47/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Centennial Elem School rank among public schools in Polo?
By Resource Investment Index, Centennial Elem School ranks #3 of 3 public schools in Polo, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking.
What other schools are in Polo Cusd 222?
Besides Centennial Elem School, Polo Cusd 222 also operates Polo Comm High School (186 students) and Aplington Middle School (114 students). See the Polo Cusd 222 district page for the complete list.