Enrollment
649
Illinois · 2024-25 NCES data
Elementary school (grades K-5) · Washington, IL
Central Intermediate Sch
Federal NCES profile for Central Intermediate Sch, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 65/100.
2024-25 NCES dataElementary school (grades K-5)NCES 170915000524
👥 S:T ratio 40
🌟 Gifted program 70
📋 Attendance 87
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Central Intermediate Sch earns 65/100 on the Resource Investment Index, with class sizes larger than 70% of Illinois schools.
- #1 of 3
- elementary schools in Washington · Resource Index
- 65
- Resource Index · Higher
- 15.1:1
- large classes for Illinois
- 649
- students enrolled
Central Intermediate Sch has class sizes larger than 70% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Central Intermediate Sch ranks #1 of 3 elementary schools in Washington, IL.
School address
District: Central Sd 51 · Illinois
NCES ID 170915000524 Verify on NCES CCD record →
Teachers (FTE)
43.0
Federal CCD staff survey
Students per teacher
15.1:1
vs 14:1 Illinois avg
+8% vs state
Student-teacher ratio in context
How Central Intermediate Sch compares with Illinois and U.S. medians
What stands out at Central Intermediate Sch
Central Intermediate Sch is a mid-sized elementary school in Washington, Illinois, enrolling 649 students.
Class loads run somewhat heavier than typical: 15.1:1 puts it in the larger third of Illinois schools by student-teacher ratio.
Enrollment of 649 puts it in the larger third of Illinois schools by headcount.
Its Resource Investment Index outscores 98% of the 3,845 Illinois schools with a score on record, a top-tier result on this measure.
Its student body is predominantly White (90% of enrollment) (diversity index 19/100).
Attendance holds up well here: only 5.4% of students were chronically absent, below the typical post-pandemic national figure.
The surrounding Central Sd 51 spends $10,234 per pupil, 40% below the Illinois average, a leaner-resourced district than most.
Among Washington's elementary schools, it stands alongside Washington Middle School (378 students): Central Intermediate Sch is larger than that campus by headcount and runs heavier classes (15.1:1 vs 14:1).
Its district, Central Sd 51, also runs Central Primary Sch (700 students).
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 Central Intermediate Sch compares
Central Intermediate Sch on the metrics families compare, against Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15.1:1 | ▲ 8% | 14:1 | 15.7:1 |
| Enrollment | 649 | top 17% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.1:1
Leaner classes than 46% of US schools, a middle-of-the-pack class size.
649
Bigger than 77% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
15.1:1
students per teacher
- 8% above state mean
Top 70% in Illinois - lower ratio than 30% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
5.4%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$10,234
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
9
in-school suspensions + 7 out-of-school
Suspension rate: 1.4 per 100 students. Combined in-school and out-of-school rate: 2.5 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 90.1%
Hispanic or Latino 4.3%
Two or More 3.9%
Asian 1.2%
African American 0.5%
Largest group: White at 90.1% of enrollment.
Student-body diversity index 18.5/100
Simpson diversity index - at 18.5, Central Intermediate Sch is less mixed than the Illinois school average of 38.9.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Central Sd 51, which includes Central Intermediate Sch.
$10,234
Per student
-40%
vs Illinois
Avg $17,042
-38%
vs U.S.
Avg $16,593
Revenue mix
Local 56.4%
State 36.9%
Federal 6.8%
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 Central Intermediate Sch Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Central Primary Sch | Similar size | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Central Intermediate Sch's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 700
- Students per teacher
- 20.6:1
- Resource Index
- 33/100
Similar elementary schools in Washington
2 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 (~649 students)
Next steps
Verify locally before acting on Central Intermediate Sch's federal record.
- Compare Central Intermediate Sch against another school. Compare schools
- Central Sd 51'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 Central Intermediate Sch
How many students attend Central Intermediate Sch?
Central Intermediate Sch has 649 students enrolled. It is an elementary school in Washington, IL.
What is the student-teacher ratio at Central Intermediate Sch?
The student-teacher ratio at Central Intermediate Sch is 15.1:1, which is 8% higher than the Illinois average of 14:1 and 4% lower than the national average of 15.7:1.
What is the racial and ethnic makeup of Central Intermediate Sch?
The largest demographic group at Central Intermediate Sch is White at 90.1% of enrollment, in Washington, IL.
What is the Resource Investment Index for Central Intermediate Sch?
Central Intermediate Sch has a Resource Investment Index of 65/100 (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 Central Intermediate Sch rank among elementary schools in Washington?
By Resource Investment Index, Central Intermediate Sch ranks #1 of 3 elementary schools in Washington, 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 Washington on the city page.
Is Central Intermediate Sch a good school?
Central Intermediate Sch earns 65/100 on the Resource Investment Index, with class sizes larger than 70% 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 Central Sd 51?
Besides Central Intermediate Sch, Central Sd 51 also operates Central Primary Sch (700 students). See the Central Sd 51 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.