Enrollment
415
Illinois · 2024-25 NCES data
Elementary school (grades K-5) · Roselle, IL
Waterbury Elem School
Federal NCES profile for Waterbury Elem School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 53/100.
2024-25 NCES dataElementary school (grades K-5)NCES 172088002374
👥 S:T ratio 52
🌟 Gifted program 70
📋 Attendance 36
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Waterbury Elem School earns 53/100 on the Resource Investment Index, with class sizes smaller than 73% of Illinois schools.
- #2 of 6
- public schools in Roselle · Resource Index
- 53
- Resource Index · Higher
- 11.9:1
- small classes for Illinois
- 415
- students enrolled
Waterbury Elem School has class sizes smaller than 73% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Waterbury Elem School ranks #2 of 6 public schools in Roselle, IL.
School address
District: Keeneyville Sd 20 · Illinois
NCES ID 172088002374 Verify on NCES CCD record →
Teachers (FTE)
35.0
Federal CCD staff survey
Students per teacher
11.9:1
vs 14:1 Illinois avg
-15% vs state
Student-teacher ratio in context
How Waterbury Elem School compares with Illinois and U.S. medians
What stands out at Waterbury Elem School
Waterbury Elem School is a mid-sized elementary school in Roselle, Illinois, enrolling 415 students.
Class sizes run a bit leaner than typical: 11.9:1 puts it in the smaller third of Illinois schools by student-teacher ratio.
With 415 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 (58%) and Hispanic or Latino (29%) (diversity index 58/100).
Chronic absenteeism is elevated: 25.8% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Roselle's elementary schools, it stands alongside Frederick Nerge Elem School (607 students): Waterbury Elem School is smaller than that campus by headcount and runs leaner classes (11.9:1 vs 13.2:1).
Keeneyville Sd 20 also operates Greenbrook Elem School (466 students) and Spring Wood Middle School (420 students) alongside Waterbury 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
How Waterbury Elem School compares
Waterbury 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 | 11.9:1 | ▼ 15% | 14:1 | 15.7:1 |
| Enrollment | 415 | top 43% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
11.9:1
Leaner classes than 76% of US schools, among the more generously staffed nationally.
415
Bigger than 50% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
11.9:1
students per teacher
- 15% below state mean
Top 27% in Illinois - lower ratio than 73% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
25.8%
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
$16,904
per pupil, district-wide
- below 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
11
in-school suspensions + 6 out-of-school
Suspension rate: 2.7 per 100 students. Combined in-school and out-of-school rate: 4.1 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 57.6%
Hispanic or Latino 28.7%
Asian 8.7%
African American 2.9%
Two or More 2.2%
Largest group: White at 57.6% of enrollment.
Student-body diversity index 57.7/100
Simpson diversity index - at 57.7, Waterbury Elem School is more mixed than the Illinois school average of 38.9.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Keeneyville Sd 20, which includes Waterbury Elem School.
$16,904
Per student
-1%
vs Illinois
Avg $17,042
+2%
vs U.S.
Avg $16,593
Revenue mix
Local 61.9%
State 30.3%
Federal 7.8%
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 Waterbury Elem School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Greenbrook Elem School | Similar size | No free-lunch data | Similar S:T ratio |
| Spring Wood Middle School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Waterbury Elem School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 466
- Students per teacher
- 11.1:1
- Resource Index
- 43/100
- Enrollment
- 420
- Students per teacher
- 11.1:1
- Resource Index
- 45/100
Similar elementary schools in Roselle
1 comparable elementary schools (grades K-5) serving the same city.
Similar elementary 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 (~415 students)
Next steps
Verify locally before acting on Waterbury Elem School's federal record.
- Compare Waterbury Elem School against another school. Compare schools
- Keeneyville Sd 20'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 Waterbury Elem School
How many students attend Waterbury Elem School?
Waterbury Elem School has 415 students enrolled. It is an elementary school in Roselle, IL.
What is the student-teacher ratio at Waterbury Elem School?
The student-teacher ratio at Waterbury Elem School is 11.9:1, which is 15% lower than the Illinois average of 14:1 and 24% 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 Waterbury Elem School?
The largest demographic group at Waterbury Elem School is White at 57.6% of enrollment, in Roselle, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 57.7/100.
What is the Resource Investment Index for Waterbury Elem School?
Waterbury Elem School has a Resource Investment Index of 53/100 (higher 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 Waterbury Elem School rank among public schools in Roselle?
By Resource Investment Index, Waterbury Elem School ranks #2 of 6 public schools in Roselle, 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 Roselle on the city page.
Is Waterbury Elem School a good school?
Waterbury Elem School earns 53/100 on the Resource Investment Index, with class sizes smaller than 73% 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 Keeneyville Sd 20?
Besides Waterbury Elem School, Keeneyville Sd 20 also operates Greenbrook Elem School (466 students) and Spring Wood Middle School (420 students). See the Keeneyville Sd 20 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.