Enrollment
706
Illinois · 2024-25 NCES data
Other / mixed grade configuration · Troy, IL
C a Henning School
Federal NCES profile for C a Henning School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 41/100.
2024-25 NCES dataOther / mixed grade configurationNCES 173735005343
👥 S:T ratio 37
🌟 Gifted program 30
📋 Attendance 57
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
C a Henning School earns 41/100 on the Resource Investment Index, with class sizes larger than 79% of Illinois schools.
- #1 of 3
- public schools in Troy · Resource Index
- 41
- Resource Index · Typical
- 15.8:1
- large classes for Illinois
- 706
- students enrolled
C a Henning School has class sizes larger than 79% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, C a Henning School ranks #1 of 3 public schools in Troy, IL.
School address
Teachers (FTE)
47.0
Federal CCD staff survey
Students per teacher
15.8:1
vs 14:1 Illinois avg
+13% vs state
Student-teacher ratio in context
How C a Henning School compares with Illinois and U.S. medians
What stands out at C a Henning School
C a Henning School is a large combined-grade school in Troy, Illinois, enrolling 706 students.
Class loads run somewhat heavier than typical: 15.8:1 puts it in the larger third of Illinois schools by student-teacher ratio.
Enrollment of 706 puts it in the larger third of Illinois schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 3,845 scored Illinois schools.
Its student body is predominantly White (87% of enrollment) (diversity index 24/100).
17.1% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding Triad Cusd 2 spends $11,966 per pupil, 30% below the Illinois average, a leaner-resourced district than most.
Among Troy's public schools, it stands alongside Silver Creek Elementary (757 students): C a Henning School is smaller than that campus by headcount and runs leaner classes (15.8:1 vs 18.2:1).
Triad Cusd 2 also operates Triad High School (1,218 students) and Triad Middle School (925 students) alongside C a Henning 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 C a Henning School compares
C a Henning 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 | 15.8:1 | ▲ 13% | 14:1 | 15.7:1 |
| Enrollment | 706 | top 14% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.8:1
Leaner classes than 41% of US schools, a middle-of-the-pack class size.
706
Bigger than 81% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
15.8:1
students per teacher
- 13% above state mean
Top 79% in Illinois - lower ratio than 21% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
17.1%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$11,966
per pupil, district-wide
- below Illinois avg of $17,042
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
2
in-school suspensions + 0 out-of-school
Suspension rate: 0.3 per 100 students. Combined in-school and out-of-school rate: 0.3 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 86.7%
Two or More 5.1%
Hispanic or Latino 5.0%
African American 2.5%
Native Hawaiian / Pacific Islander 0.4%
Asian 0.3%
Largest group: White at 86.7% of enrollment.
Student-body diversity index 24.3/100
Simpson diversity index - at 24.3, C a Henning School is less mixed than the Illinois school average of 38.9.
Programs
Funding & spending
District-wide per-pupil expenditure for Triad Cusd 2, which includes C a Henning School.
$11,966
Per student
-30%
vs Illinois
Avg $17,042
-28%
vs U.S.
Avg $16,593
Revenue mix
Local 52.8%
State 38.9%
Federal 8.3%
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 C a Henning School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Triad High School | Larger | No free-lunch data | Similar S:T ratio |
| Triad Middle School | Larger | No free-lunch data | Similar S:T ratio |
| Silver Creek Elementary | Similar size | No free-lunch data | Higher S:T ratio |
| St Jacob Elem School | Smaller | No free-lunch data | Similar S:T ratio |
| Marine Elem School | Smaller | No free-lunch data | Similar S:T ratio |
Comparisons are relative to C a Henning School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,218
- Students per teacher
- 16.1:1
- Resource Index
- 33/100
- Enrollment
- 925
- Students per teacher
- 16.7:1
- Resource Index
- 32/100
- Enrollment
- 757
- Students per teacher
- 18.2:1
- Resource Index
- 38/100
- Enrollment
- 262
- Students per teacher
- 16.4:1
- Resource Index
- 47/100
- Enrollment
- 141
- Students per teacher
- 16.3:1
- Resource Index
- 45/100
Similar other schools in Troy
1 comparable other schools (grades Mixed) serving the same city.
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 (~706 students)
Similar student-teacher ratio (~15.8:1)
Next steps
Verify locally before acting on C a Henning School's federal record.
- Compare C a Henning School against another school. Compare schools
- Triad Cusd 2'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 C a Henning School
How many students attend C a Henning School?
C a Henning School has 706 students enrolled. It is a public school in Troy, IL.
What is the student-teacher ratio at C a Henning School?
The student-teacher ratio at C a Henning School is 15.8:1, which is 13% higher than the Illinois average of 14:1 and 1% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of C a Henning School?
The largest demographic group at C a Henning School is White at 86.7% of enrollment, in Troy, IL.
What is the Resource Investment Index for C a Henning School?
C a Henning 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 C a Henning School rank among public schools in Troy?
By Resource Investment Index, C a Henning School ranks #1 of 3 public schools in Troy, 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 Troy on the city page.
Is C a Henning School a good school?
C a Henning School earns 41/100 on the Resource Investment Index, with class sizes larger 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 Triad Cusd 2?
Besides C a Henning School, Triad Cusd 2 also operates Triad High School (1,218 students), Triad Middle School (925 students), and Silver Creek Elementary (757 students). See the Triad Cusd 2 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.