Enrollment
525
Indiana · 2024-25 NCES data
Other / mixed grade configuration · Indianapolis, IN
Federal NCES profile for Thomas D Gregg School 15, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 33/100.
The verdict
Thomas D Gregg School 15 earns 33/100 on the Resource Investment Index, with class sizes larger than 99% of Indiana schools. It is also more racially and ethnically mixed than most Indiana schools.
Thomas D Gregg School 15 has class sizes larger than 99% of Indiana schools. Computed live against every Indiana school reporting to NCES.
By Resource Investment Index, Thomas D Gregg School 15 ranks #55 of 90 schools in Indianapolis, IN.
NCES ID 180477000896 Verify on NCES CCD record →
Enrollment
525
Indiana · 2024-25 NCES data
Teachers (FTE)
9.0
Federal CCD staff survey
Students per teacher
58.3:1
vs 15.9:1 Indiana avg
+267% vs state
Free-lunch eligible
83.4%
vs 49.5% Indiana avg
+68% vs state
How Thomas D Gregg School 15 compares with Indiana and U.S. medians
Larger classes than state median
58.3:1 - 42.4 above the Indiana state median of 15.9:1, indicating larger average class loads than typical schools in the state.
Thomas D Gregg School 15 is a high-poverty, mid-sized combined-grade school in Indianapolis, Indiana, enrolling 525 students.
Class loads run heavy: 58.3:1 is larger than about 99% of Indiana schools and 267% above the 15.9:1 state mean, so each teacher carries more students than is typical.
Economic need is high: 83.4% of students qualify for free meals, 68% above the Indiana average, a Title I-weighted population that federal funding formulas prioritise.
With 525 students, its enrollment sits close to the Indiana median campus size.
Its Resource Investment Index lands in the lower third of 1,862 scored Indiana schools.
Against 235 statewide peers matched on enrollment and economic need, it ranks mid-pack at #144.
Its student body is led by African American (42%) and Hispanic or Latino (40%), more mixed than most schools in the state (diversity index 65/100).
12.2% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding Indianapolis Public Schools spends $19,511 per pupil, 62% above the Indiana average, a better-resourced district than most.
Discipline events run high: 179 in- and out-of-school suspensions were reported for 525 students in the 2021-22 Civil Rights Data Collection.
Among Indianapolis's public schools, it stands alongside Indiana Connections Academy (5,376 students): Thomas D Gregg School 15 is smaller than that campus by headcount and runs heavier classes (58.3:1 vs 36.6:1).
Indianapolis Public Schools also operates Arsenal Technical High School (2,360 students) and Crispus Attucks High School (1,269 students) alongside Thomas D Gregg School 15.
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 D Gregg School 15 on the metrics families compare, against Indiana and U.S. means.
| Metric | This school | vs Indiana | Indiana avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 58.3:1 | ▲ 267% | 15.9:1 | 15.7:1 |
| Free-lunch eligible | 83.4% | ▲ 68% | 49.5% | 51.7% |
| Enrollment | 525 | top 38% | - | - |
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 41.7% of enrollment.
Simpson diversity index - at 65.2, Thomas D Gregg School 15 is more mixed than the Indiana school average of 39.0.
District-wide per-pupil expenditure for Indianapolis Public Schools, which includes Thomas D Gregg School 15.
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 |
|---|---|---|---|
| Arsenal Technical High School | Larger | Similar economic need | Lower S:T ratio |
| Crispus Attucks High School | Larger | Similar economic need | Lower S:T ratio |
| Shortridge High School | Larger | Lower economic need | Lower S:T ratio |
| George Washington High School | Larger | Lower economic need | Lower S:T ratio |
| Northwest Community Middle School | Similar size | Lower economic need | Lower S:T ratio |
Comparisons are relative to Thomas D Gregg School 15's own figures; each column derives from NCES Common Core of Data.
6 comparable other schools (grades Mixed) serving the same city.
Matched by enrollment size and by staffing ratio across all of Indiana, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Thomas D Gregg School 15'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 D Gregg School 15 has 525 students enrolled. It is a public school in Indianapolis, IN.
The student-teacher ratio at Thomas D Gregg School 15 is 58.3:1, which is 267% higher than the Indiana average of 15.9:1 and 271% higher than the national average of 15.7:1.
83.4% of students at Thomas D Gregg School 15 are eligible for free lunch, compared to the Indiana average of 49.5%.
The largest demographic group at Thomas D Gregg School 15 is African American at 41.7% of enrollment, in Indianapolis, IN. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 65.2/100.
Thomas D Gregg School 15 has a Resource Investment Index of 33/100 (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 D Gregg School 15 ranks #55 of 90 schools in Indianapolis, IN. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Indianapolis on the city page.
Thomas D Gregg School 15 earns 33/100 on the Resource Investment Index, with class sizes larger than 99% of Indiana schools. It is also more racially and ethnically mixed than most Indiana 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 D Gregg School 15, Indianapolis Public Schools also operates Arsenal Technical High School (2,360 students), Crispus Attucks High School (1,269 students), and Shortridge High School (1,206 students). See the Indianapolis Public Schools 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 D Gregg School 15, Indianapolis IN.” 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-d-gregg-school-15-in
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