Enrollment
1,843
Illinois · 2024-25 NCES data
High school (grades 9-12) · South Holland, IL
Thornwood High School
Federal NCES profile for Thornwood High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 43/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 173897003956
👥 S:T ratio 49
📚 AP courses 45
🌟 Gifted program 30
🎓 Counselors 47
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Thornwood High School earns 43/100 on the Resource Investment Index, with class sizes near the Illinois median. It is also one of the largest schools in Illinois.
- #1 of 7
- public schools in South Holland · Resource Index
- 43
- Resource Index · Typical
- 12.7:1
- students per teacher
- 1,843
- students enrolled
Thornwood High School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Thornwood High School ranks #1 of 7 public schools in South Holland, IL.
School address
District: Thornton Twp Hsd 205 · Illinois
NCES ID 173897003956 Verify on NCES CCD record →
Teachers (FTE)
145.0
Federal CCD staff survey
Students per teacher
12.7:1
vs 14:1 Illinois avg
-9% vs state
Student-teacher ratio in context
How Thornwood High School compares with Illinois and U.S. medians
What stands out at Thornwood High School
Thornwood High School is a large high school in South Holland, Illinois, enrolling 1,843 students.
Class sizes run a bit leaner than typical: 12.7:1 puts it in the smaller third of Illinois schools by student-teacher ratio.
By headcount it is one of the larger campuses in Illinois, bigger than 97% of state schools at 1,843 students.
Its Resource Investment Index sits near the middle of the pack among 3,845 scored Illinois schools.
Its student body is predominantly African American (82% of enrollment) (diversity index 31/100).
On the academic-pipeline side it reports 9 Advanced Placement courses.
Counselor coverage runs a bit thin, about 263 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
The surrounding Thornton Twp Hsd 205 spends $21,928 per pupil, 29% above the Illinois average, a better-resourced district than most.
Thornton Twp Hsd 205 also operates Thornton Township High School (1,697 students) and Thornridge High School (969 students) alongside Thornwood High 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 Thornwood High School compares
Thornwood High 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 | 12.7:1 | ▼ 9% | 14:1 | 15.7:1 |
| Enrollment | 1,843 | top 3% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.7:1
Leaner classes than 69% of US schools, among the more generously staffed nationally.
1,843
Bigger than 98% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
12.7:1
students per teacher
- 9% below state mean
Top 38% in Illinois - lower ratio than 62% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Funding equity
$21,928
per pupil, district-wide
- above Illinois avg of $17,042
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors7.0 FTE
Per 263 students, the combined health-and-guidance staffing load for this school.
Discipline context
1
in-school suspensions + 347 out-of-school
Suspension rate: 0.1 per 100 students. Combined in-school and out-of-school rate: 18.9 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
African American 82.0%
Hispanic or Latino 13.7%
White 2.0%
Two or More 1.8%
American Indian / Alaska Native 0.3%
Asian 0.1%
Largest group: African American at 82.0% of enrollment.
Student-body diversity index 30.8/100
Simpson diversity index - at 30.8, Thornwood High School is less mixed than the Illinois school average of 38.9.
Programs
AP courses offered 9
Funding & spending
District-wide per-pupil expenditure for Thornton Twp Hsd 205, which includes Thornwood High School.
$21,928
Per student
+29%
vs Illinois
Avg $17,042
+32%
vs U.S.
Avg $16,593
Revenue mix
Local 56.3%
State 35.7%
Federal 8.0%
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 Thornwood High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Thornton Township High School | Similar size | No free-lunch data | Higher S:T ratio |
| Thornridge High School | Smaller | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Thornwood High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,697
- Students per teacher
- 14.5:1
- Resource Index
- 45/100
- Enrollment
- 969
- Students per teacher
- 13.5:1
- Resource Index
- 32/100
Similar high 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 (~1,843 students)
Similar student-teacher ratio (~12.7:1)
Next steps
Verify locally before acting on Thornwood High School's federal record.
- Compare Thornwood High School against another school. Compare schools
- Thornton Twp Hsd 205'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 Thornwood High School
How many students attend Thornwood High School?
Thornwood High School has 1,843 students enrolled. It is a high school in South Holland, IL.
What is the student-teacher ratio at Thornwood High School?
The student-teacher ratio at Thornwood High School is 12.7:1, which is 9% lower than the Illinois average of 14:1 and 19% 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 Thornwood High School?
The largest demographic group at Thornwood High School is African American at 82.0% of enrollment, in South Holland, IL.
What is the Resource Investment Index for Thornwood High School?
Thornwood High School has a Resource Investment Index of 43/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, AP course offerings, counselor availability. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Thornwood High School rank among public schools in South Holland?
By Resource Investment Index, Thornwood High School ranks #1 of 7 public schools in South Holland, 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 South Holland on the city page.
Is Thornwood High School a good school?
Thornwood High School earns 43/100 on the Resource Investment Index, with class sizes near the Illinois median. It is also one of the largest schools in Illinois. 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 Thornton Twp Hsd 205?
Besides Thornwood High School, Thornton Twp Hsd 205 also operates Thornton Township High School (1,697 students) and Thornridge High School (969 students). See the Thornton Twp Hsd 205 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.