Enrollment
433
Illinois · 2024-25 NCES data
Elementary school (grades K-5) · Mchenry, IL
Chauncey H Duker School
Federal NCES profile for Chauncey H Duker School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 47/100.
2024-25 NCES dataElementary school (grades K-5)NCES 172529004456
👥 S:T ratio 57
🌟 Gifted program 30
📋 Attendance 53
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Chauncey H Duker School earns 47/100 on the Resource Investment Index, with class sizes smaller than 85% of Illinois schools.
- #1 of 4
- elementary schools in Mchenry · Resource Index
- 47
- Resource Index · Typical
- 10.8:1
- small classes for Illinois
- 433
- students enrolled
Chauncey H Duker School has class sizes smaller than 85% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Chauncey H Duker School ranks #1 of 4 elementary schools in Mchenry, IL.
School address
District: Mchenry Ccsd 15 · Illinois
NCES ID 172529004456 Verify on NCES CCD record →
Teachers (FTE)
36.0
Federal CCD staff survey
Students per teacher
10.8:1
vs 14:1 Illinois avg
-23% vs state
Student-teacher ratio in context
How Chauncey H Duker School compares with Illinois and U.S. medians
What stands out at Chauncey H Duker School
Chauncey H Duker School is a mid-sized elementary school in Mchenry, Illinois, enrolling 433 students.
Classes run notably small here: at 10.8:1, Chauncey H Duker School is leaner than roughly 85% of Illinois schools and 23% under the state's 14:1 norm, more adult attention per pupil than most peers.
With 433 students, its enrollment sits close to the Illinois median campus size.
Its Resource Investment Index lands in the upper third of 3,845 scored Illinois schools.
Its student body is led by White (67%) and Hispanic or Latino (25%) (diversity index 49/100).
Attendance runs somewhat below the norm, with 18.7% of students chronically absent per the 2021-22 civil-rights collection.
Among Mchenry's elementary schools, it stands alongside Valley View Elem School (526 students): Chauncey H Duker School is smaller than that campus by headcount and runs leaner classes (10.8:1 vs 12.5:1).
Mchenry Ccsd 15 also operates Mchenry Middle School (695 students) and Parkland School (645 students) alongside Chauncey H Duker 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 Chauncey H Duker School compares
Chauncey H Duker 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 | 10.8:1 | ▼ 23% | 14:1 | 15.7:1 |
| Enrollment | 433 | top 40% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.8:1
Leaner classes than 86% of US schools, among the more generously staffed nationally.
433
Bigger than 52% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
10.8:1
students per teacher
- 23% below state mean
Top 15% in Illinois - lower ratio than 85% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
18.7%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$19,607
per pupil, district-wide
- above Illinois avg of $17,042
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 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 66.7%
Hispanic or Latino 25.2%
Two or More 4.4%
African American 2.8%
Asian 0.9%
Largest group: White at 66.7% of enrollment.
Student-body diversity index 48.9/100
Simpson diversity index - at 48.9, Chauncey H Duker School is more mixed than the Illinois school average of 38.9.
Programs
Funding & spending
District-wide per-pupil expenditure for Mchenry Ccsd 15, which includes Chauncey H Duker School.
$19,607
Per student
+15%
vs Illinois
Avg $17,042
+18%
vs U.S.
Avg $16,593
Revenue mix
Local 61.7%
State 32.0%
Federal 6.3%
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 Chauncey H Duker School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Mchenry Middle School | Larger | No free-lunch data | Similar S:T ratio |
| Parkland School | Larger | No free-lunch data | Similar S:T ratio |
| Riverwood Elementary School | Larger | No free-lunch data | Similar S:T ratio |
| Valley View Elem School | Similar size | No free-lunch data | Higher S:T ratio |
| Edgebrook Elem School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Chauncey H Duker School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 695
- Students per teacher
- 11.4:1
- Resource Index
- 41/100
- Enrollment
- 645
- Students per teacher
- 11.9:1
- Resource Index
- 41/100
- Enrollment
- 619
- Students per teacher
- 12.2:1
- Resource Index
- 43/100
- Enrollment
- 526
- Students per teacher
- 12.5:1
- Resource Index
- 37/100
- Enrollment
- 494
- Students per teacher
- 11.2:1
- Resource Index
- 44/100
Similar elementary schools in Mchenry
1 comparable elementary schools (grades K-5) serving the same city.
Next steps
Verify locally before acting on Chauncey H Duker School's federal record.
- Compare Chauncey H Duker School against another school. Compare schools
- Mchenry Ccsd 15'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 Chauncey H Duker School
How many students attend Chauncey H Duker School?
Chauncey H Duker School has 433 students enrolled. It is an elementary school in Mchenry, IL.
What is the student-teacher ratio at Chauncey H Duker School?
The student-teacher ratio at Chauncey H Duker School is 10.8:1, which is 23% lower than the Illinois average of 14:1 and 31% 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 Chauncey H Duker School?
The largest demographic group at Chauncey H Duker School is White at 66.7% of enrollment, in Mchenry, IL.
What is the Resource Investment Index for Chauncey H Duker School?
Chauncey H Duker School has a Resource Investment Index of 47/100 (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 Chauncey H Duker School rank among elementary schools in Mchenry?
By Resource Investment Index, Chauncey H Duker School ranks #1 of 4 elementary schools in Mchenry, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Mchenry on the city page.
Is Chauncey H Duker School a good school?
Chauncey H Duker School earns 47/100 on the Resource Investment Index, with class sizes smaller than 85% 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 Mchenry Ccsd 15?
Besides Chauncey H Duker School, Mchenry Ccsd 15 also operates Mchenry Middle School (695 students), Parkland School (645 students), and Riverwood Elementary School (619 students). See the Mchenry Ccsd 15 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.