Enrollment
392
Illinois · 2024-25 NCES data
Other / mixed grade configuration · Orland Park, IL
Centennial School
Federal NCES profile for Centennial School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 41/100.
2024-25 NCES dataOther / mixed grade configurationNCES 173022005541
👥 S:T ratio 51
🌟 Gifted program 30
📋 Attendance 43
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Centennial School earns 41/100 on the Resource Investment Index, with class sizes near the Illinois median.
- #3 of 6
- schools in Orland Park · Resource Index
- 41
- Resource Index · Typical
- 12.3:1
- students per teacher
- 392
- students enrolled
Centennial School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Centennial School ranks #3 of 6 schools in Orland Park, IL.
School address
District: Orland Sd 135 · Illinois
NCES ID 173022005541 Verify on NCES CCD record →
Teachers (FTE)
32.0
Federal CCD staff survey
Students per teacher
12.3:1
vs 14:1 Illinois avg
-12% vs state
Student-teacher ratio in context
How Centennial School compares with Illinois and U.S. medians
What stands out at Centennial School
Centennial School is a mid-sized combined-grade school in Orland Park, Illinois, enrolling 392 students.
Class sizes run a bit leaner than typical: 12.3:1 puts it in the smaller third of Illinois schools by student-teacher ratio.
With 392 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 (76%) and Hispanic or Latino (10%) (diversity index 41/100).
Attendance runs somewhat below the norm, with 23.0% of students chronically absent per the 2021-22 civil-rights collection.
Among Orland Park's public schools, it stands alongside Prairie Elem School (507 students): Centennial School is smaller than that campus by headcount and runs leaner classes (12.3:1 vs 12.7:1).
Orland Sd 135 also operates Jerling Junior High School (677 students) and Century Junior High School (636 students) alongside Centennial 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 Centennial School compares
Centennial 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 | 12.3:1 | ▼ 12% | 14:1 | 15.7:1 |
| Enrollment | 392 | top 47% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.3:1
Leaner classes than 73% of US schools, among the more generously staffed nationally.
392
Bigger than 46% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
12.3:1
students per teacher
- 12% below state mean
Top 33% in Illinois - lower ratio than 67% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
23.0%
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
$17,197
per pupil, district-wide
- above 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
1
in-school suspensions + 3 out-of-school
Suspension rate: 0.3 per 100 students. Combined in-school and out-of-school rate: 1.0 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 76.0%
Hispanic or Latino 9.7%
African American 5.1%
Two or More 4.8%
Asian 4.1%
Native Hawaiian / Pacific Islander 0.3%
Largest group: White at 76.0% of enrollment.
Student-body diversity index 40.6/100
Simpson diversity index - at 40.6, Centennial School is about as mixed as the Illinois school average of 38.9.
Programs
Funding & spending
District-wide per-pupil expenditure for Orland Sd 135, which includes Centennial School.
$17,197
Per student
+1%
vs Illinois
Avg $17,042
+4%
vs U.S.
Avg $16,593
Revenue mix
Local 71.0%
State 24.0%
Federal 5.1%
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 Centennial School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Jerling Junior High School | Larger | No free-lunch data | Higher S:T ratio |
| Century Junior High School | Larger | No free-lunch data | Similar S:T ratio |
| Liberty Elem School | Larger | No free-lunch data | Higher S:T ratio |
| Meadow Ridge School | Larger | No free-lunch data | Similar S:T ratio |
| Orland Jr High School | Larger | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Centennial School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 677
- Students per teacher
- 14.4:1
- Resource Index
- 43/100
- Enrollment
- 636
- Students per teacher
- 12.7:1
- Resource Index
- 43/100
- Enrollment
- 627
- Students per teacher
- 16.1:1
- Resource Index
- 41/100
- Enrollment
- 554
- Students per teacher
- 13.5:1
- Resource Index
- 45/100
- Enrollment
- 524
- Students per teacher
- 12.2:1
- Resource Index
- 47/100
Similar other schools in Orland Park
5 comparable other schools (grades Mixed) serving the same city.
Prairie Elem School
Standard public school
507 students 12.7:1 students per teacher
Arnold W Kruse Ed Center
Standard public school
462 students 12.5:1 students per teacher
Fernway Park Elem School
Standard public school
461 students 15.4:1 students per teacher
Orland Park Elem School
Standard public school
386 students 16.1:1 students per teacher
Orland Center School
Standard public school
379 students 12.6:1 students per teacher
Similar other 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 (~392 students)
Next steps
Verify locally before acting on Centennial School's federal record.
- Compare Centennial School against another school. Compare schools
- Orland Sd 135'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 Centennial School
How many students attend Centennial School?
Centennial School has 392 students enrolled. It is a public school in Orland Park, IL.
What is the student-teacher ratio at Centennial School?
The student-teacher ratio at Centennial School is 12.3:1, which is 12% lower than the Illinois average of 14:1 and 22% 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 Centennial School?
The largest demographic group at Centennial School is White at 76.0% of enrollment, in Orland Park, IL.
What is the Resource Investment Index for Centennial School?
Centennial 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).
How does Centennial School rank among schools in Orland Park?
By Resource Investment Index, Centennial School ranks #3 of 6 schools in Orland Park, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Orland Park on the city page.
Is Centennial School a good school?
Centennial 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.
What other schools are in Orland Sd 135?
Besides Centennial School, Orland Sd 135 also operates Jerling Junior High School (677 students), Century Junior High School (636 students), and Liberty Elem School (627 students). See the Orland Sd 135 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.