Enrollment
400
Illinois · 2024-25 NCES data
Elementary school (grades K-5) · Carbondale, IL
Federal NCES profile for Thomas Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
The verdict
Thomas Elementary School earns 42/100 on the Resource Investment Index, with class sizes smaller than 76% of Illinois schools. It is also more racially and ethnically mixed than most Illinois schools.
Thomas Elementary School has class sizes smaller than 76% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Thomas Elementary School ranks #3 of 7 public schools in Carbondale, IL.
NCES ID 170834000448 Verify on NCES CCD record →
Enrollment
400
Illinois · 2024-25 NCES data
Teachers (FTE)
26.0
Federal CCD staff survey
Students per teacher
11.7:1
vs 14:1 Illinois avg
-16% vs state
How Thomas Elementary School compares with Illinois and U.S. medians
Smaller classes than state median
11.7:1 - 2.3 below the Illinois state median of 14:1, indicating smaller average class loads than typical schools in the state.
Thomas Elementary School is a mid-sized elementary school in Carbondale, Illinois, enrolling 400 students.
Class sizes run a bit leaner than typical: 11.7:1 puts it in the smaller third of Illinois schools by student-teacher ratio.
With 400 students, its enrollment sits close to the Illinois median campus size.
Its Resource Investment Index sits near the middle of the pack among 3,845 scored Illinois schools.
Its student body is led by African American (51%) and White (25%), more mixed than most schools in the state (diversity index 65/100).
Chronic absenteeism is elevated: 38.5% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Carbondale Esd 95 spends $21,377 per pupil, 25% above the Illinois average, a better-resourced district than most.
Its district draws 21.3% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Carbondale's elementary schools, it stands alongside Lewis School (325 students): Thomas Elementary School is larger than that campus by headcount and runs leaner classes (11.7:1 vs 12:1).
Carbondale Esd 95 also operates Parrish Elem School (466 students) and Carbondale Middle School (457 students) alongside Thomas Elementary 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
Thomas Elementary 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 | 11.7:1 | ▼ 16% | 14:1 | 15.7:1 |
| Enrollment | 400 | top 45% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
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.
Largest group: African American at 51.1% of enrollment.
Simpson diversity index - at 65.1, Thomas Elementary School is more mixed than the Illinois school average of 38.9.
District-wide per-pupil expenditure for Carbondale Esd 95, which includes Thomas Elementary School.
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.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Parrish Elem School | Similar size | No free-lunch data | Higher S:T ratio |
| Carbondale Middle School | Similar size | No free-lunch data | Similar S:T ratio |
| Lewis School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Thomas Elementary School's own figures; each column derives from NCES Common Core of Data.
1 comparable elementary schools (grades K-5) serving the same city.
Next steps
Verify locally before acting on Thomas Elementary School's federal record.
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.
Thomas Elementary School has 400 students enrolled. It is an elementary school in Carbondale, IL.
The student-teacher ratio at Thomas Elementary School is 11.7:1, which is 16% lower than the Illinois average of 14:1 and 25% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
The largest demographic group at Thomas Elementary School is African American at 51.1% of enrollment, in Carbondale, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 65.1/100.
Thomas Elementary School has a Resource Investment Index of 42/100 (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).
By Resource Investment Index, Thomas Elementary School ranks #3 of 7 public schools in Carbondale, 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 Carbondale on the city page.
Thomas Elementary School earns 42/100 on the Resource Investment Index, with class sizes smaller than 76% of Illinois schools. It is also more racially and ethnically mixed than most 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.
Besides Thomas Elementary School, Carbondale Esd 95 also operates Parrish Elem School (466 students), Carbondale Middle School (457 students), and Lewis School (325 students). See the Carbondale Esd 95 district page for the complete list.
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.
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PlainSchools, “Thomas Elementary School, Carbondale IL.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/thomas-elementary-school-il/
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