- Enrollment
- 856
- Students per teacher
- 15:1
- Resource Index
- 46/100
Elementary school (grades K-5) · Lemont, IL
Central School
Federal NCES profile for Central School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 32/100.
2024-25 NCES dataElementary school (grades K-5)NCES 170729006891
👥 S:T ratio 32
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Central School earns 32/100 on the Resource Investment Index, with class sizes larger than 87% of Illinois schools.
- #5 of 5
- public schools in Lemont · Resource Index
- 32
- Resource Index · Typical
- 16.9:1
- large classes for Illinois
- 591
- students enrolled
Central School has class sizes larger than 87% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Central School ranks #5 of 5 public schools in Lemont, IL.
School address
District: Lemont-Bromberek Csd 113a · Illinois
NCES ID 170729006891 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+7 students YoY
Central School held near 540 students from 2022-23 to 2023-24 (+7 headcount).
Teacher FTE added 35.0 → 35.5 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+7 students YoY 170729006891 · Lemont, IL Elementary · MID · TRAD
591 enr · 16.9:1 · RII 32
Nearest enrollment peer: Old Quarry Middle Sch (856 students)
Central School held near 540 students from 2022-23 to 2023-24 (+7 headcount). Teacher FTE added 35.0 → 35.5 across the same CCD years. Read with this school → · District book → · Illinois schools → · Find another →
Central School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Old Quarry Mid
Old Quarry Middle Sch
856 students
- Oakwood School
Oakwood School
629 students
- This school
Central School
591 students
- River Valley S
River Valley School
588 students
What this shows Central School reports 591 students on the CCD universe file.
How Central School compares
Central School held steady on CCD headcount: ratios and free-lunch share vs Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 16.9:1 | ▲ 21% | 14:1 | 15.7:1 |
| Enrollment | 591 | top 21% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.9:1
Leaner classes than 31% of US schools, heavier class loads than most.
591
Bigger than 72% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Staffing depth
16.9:1
students per teacher
- 21% above state mean
Top 87% in Illinois - lower ratio than 13% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Funding equity
$13,838
per pupil, district-wide
- below Illinois avg of $18,196
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Student demographics
White 81.7%
Hispanic or Latino 10.3%
Asian 3.7%
Two or More 2.7%
African American 1.2%
American Indian / Alaska Native 0.2%
Native Hawaiian / Pacific Islander 0.2%
Largest group: White at 81.7% of enrollment.
Student-body diversity index 32.0/100
Simpson diversity index - at 32.0, Central School is less mixed than the Illinois school average of 38.9.
District finance for Lemont-Bromberek Csd 113a reports $13,838 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Central School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Old Quarry Middle Sch | Larger | No free-lunch data | Lower S:T ratio |
| Oakwood School | Similar size | No free-lunch data | Lower S:T ratio |
| River Valley School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Central School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 629
- Students per teacher
- 15.3:1
- Resource Index
- 42/100
- Enrollment
- 588
- Students per teacher
- 15.5:1
- Resource Index
- 48/100
Similar elementary schools in Lemont
1 comparable elementary schools (grades K-5) serving the same city.
Nationwide elementary schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~591 students)
Frequently asked questions about Central School
How many students attend Central School?
Central School has 591 students enrolled. It is an elementary school in Lemont, IL. CCD year-over-year: 533 (2022-23) → 540 (2023-24), nearly flat (+7).
What is the student-teacher ratio at Central School?
The student-teacher ratio at Central School is 16.9:1, which is 21% higher than the Illinois average of 14:1 and 8% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Central School?
The largest demographic group at Central School is White at 81.7% of enrollment, in Lemont, IL.
What is the Resource Investment Index for Central School?
Central School has a Resource Investment Index of 32/100 (typical reported resources relative to schools nationally) based on 1 factor: student-teacher ratio. Not a test-score or academic measure (national median ~41/100, see methodology). Limited indicators were available, so the index reflects partial data.
How does Central School rank among public schools in Lemont?
By Resource Investment Index, Central School ranks #5 of 5 public schools in Lemont, 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 Lemont on the city page.
What other schools are in Lemont-Bromberek Csd 113a?
Besides Central School, Lemont-Bromberek Csd 113a also operates Old Quarry Middle Sch (856 students), Oakwood School (629 students), and River Valley School (588 students). See the Lemont-Bromberek Csd 113a district page for the complete list.